Memory leak when using setConfiguration()?

I started using the EBYTE 220 library.
When trying to modify device settings with setConfiguration() a memory leak appears when seeing the following parameters:

17:32:16.543 > SpeedParityBit : 0 -> 8N1 (Default)
17:32:16.586 > SpeedUARTDatte : 11 -> 9600bps (default)
17:32:16.634 > SpeedAirDataRate : 10 -> 2.4kbps (default)

17:32:17.547 > Chan : 100 -> 510MHz
17:32:17,570 >
17:32:17.573 > SpeedParityBit : 1 -> 8O1
17:32:17.605 > SpeedUARTDatte : 11 -> 9600bps (default)
17:32:17.653 > SpeedAirDataRate : 101 -> 19.2kbps
17:32:17.693 >
17:32:17.696 > OptionSubPacketSett: 1 -> 128bytes
17:32:17.733 > OptionTranPower : 11 -> 10dBm
17:32:17.769 > OptionRSSIAmbientNo: 1 -> Enabled
17:32:17.805 >
17:32:17.809 > TransModeWORPeriod : 101 -> 3000ms

Here is my attached code. Or am I the one doing something wrong? I copied the example from the library and copied it into the code.
I’m using VS CODE + Platformio and a NodeMCU ESP8266 and a 16×2 Display.

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--- Miniterm on COM5  9600,8,N,1 ---
--- Quit: Ctrl+C | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
17:32:14.085 > RX MIC ---> 12
17:32:14.101 > TX MIC ---> 13
17:32:14.118 > AUX ---> 16
17:32:14.134 > M0 ---> -1
17:32:14.144 > M1 ---> -1
17:32:14.156 > Init AUX pin!
17:32:14.172 > Begin ex     
17:32:14.182 > Begin Software Serial
17:32:14.206 > Begin      
17:32:14.217 > The M0 and M1 pins is not set, this mean that you are connect directly the pins as you need!
17:32:14.313 > AUX HIGH!
17:32:14.324 > Complete!
17:32:14.337 > The M0 and M1 pins is not set, this mean that you are connect directly the pins as you need!
17:32:14.434 > AUX HIGH!
17:32:14.444 > Complete!
17:32:14.456 > 3
17:32:14.512 > Available buffer: 0 structure size: 11
17:32:14.553 > ----------------------------------------
17:32:14.597 > HEAD : 0 0 0
17:32:14.612 >
17:32:14.615 > AddH : 0
17:32:14.625 > AddL : 0
17:32:14.636 >
17:32:14.639 > Chan : 0 -> 410MHz
17:32:14.660 >
17:32:14.663 > SpeedParityBit     : 0 -> 8N1 (Default)
17:32:14.706 > SpeedUARTDatte     : 0 -> 1200bps
17:32:14.742 > SpeedAirDataRate   : 0 -> 2.4kbps
17:32:14.779 >
17:32:14.783 > OptionSubPacketSett: 0 -> 200bytes (default)
17:32:14.830 > OptionTranPower    : 0 -> 22dBm (Default)
17:32:14.874 > OptionRSSIAmbientNo: 0 -> Disabled (default)
17:32:14.922 >
17:32:14.925 > TransModeWORPeriod : 0 -> 500ms
17:32:14.960 > TransModeEnableLBT : 0 -> Disabled (default)
17:32:15.008 > TransModeEnableRSSI: 0 -> Disabled (default)
17:32:15.056 > TransModeFixedTrans: 0 -> Transparent transmission (default)
17:32:15.120 > ----------------------------------------
17:32:15.164 > The M0 and M1 pins is not set, this mean that you are connect directly the pins as you need!
17:32:15.262 > AUX HIGH!
17:32:15.273 > Complete!
17:32:15.285 > No response from device! (Check wiring)
17:32:15.327 > 12
17:32:15.332 > ----------------------------------------
17:32:15.375 > HEAD : 0 0 0
17:32:15.390 >  
17:32:15.393 > AddH : 0
17:32:15.403 > AddL : 0
17:32:15.414 >
17:32:15.418 > Chan : 0 -> 900MHz
17:32:15.438 >
17:32:15.441 > SpeedParityBit     : 0 -> 8N1 (Default)
17:32:15.485 > SpeedUARTDatte     : 0 -> 1200bps
17:32:15.521 > SpeedAirDataRate   : 0 -> 2.4kbps
17:32:15.557 >
17:32:15.560 > OptionSubPacketSett: 0 -> 200bytes (default)
17:32:15.608 > OptionTranPower    : 0 -> 22dBm (Default)
17:32:15.652 > OptionRSSIAmbientNo: 0 -> Disabled (default)
17:32:15.700 >  
17:32:15.704 > TransModeWORPeriod : 0 -> 500ms
17:32:15.738 > TransModeEnableLBT : 0 -> Disabled (default)
17:32:15.786 > TransModeEnableRSSI: 0 -> Disabled (default)
17:32:15.834 > TransModeFixedTrans: 0 -> Transparent transmission (default)
17:32:15.899 > ----------------------------------------
17:32:15.942 > The M0 and M1 pins is not set, this mean that you are connect directly the pins as you need!
17:32:16.040 > AUX HIGH!
17:32:16.051 > Complete!
17:32:16.270 > AUX HIGH!
17:32:16.433 > ----------------------------------------
17:32:16.476 > HEAD : C0 0 8
17:32:16.491 >
17:32:16.494 > AddH : 0
17:32:16.505 > AddL : 3
17:32:16.516 >
17:32:16.518 > Chan : 23 -> 433MHz
17:32:16.540 >
17:32:16.543 > SpeedParityBit     : 0 -> 8N1 (Default)
17:32:16.586 > SpeedUARTDatte     : 11 -> 9600bps (default)
17:32:16.634 > SpeedAirDataRate   : 10 -> 2.4kbps (default)
17:32:16.682 >
17:32:16.685 > OptionSubPacketSett: 0 -> 200bytes (default)
17:32:16.734 > OptionTranPower    : 0 -> 22dBm (Default)
17:32:16.778 > OptionRSSIAmbientNo: 0 -> Disabled (default)
17:32:16.826 >
17:32:16.829 > TransModeWORPeriod : 11 -> 2000ms (default)
17:32:16.876 > TransModeEnableLBT : 0 -> Disabled (default)
17:32:16.924 > TransModeEnableRSSI: 0 -> Disabled (default)
17:32:16.972 > TransModeFixedTrans: 0 -> Transparent transmission (default)
17:32:17.036 > ----------------------------------------
17:32:17.081 > The M0 and M1 pins is not set, this mean that you are connect directly the pins as you need!
17:32:17.178 > AUX HIGH!
17:32:17.189 > Complete!  
17:32:17.201 > Save mode returned not recognized!
17:32:17.242 > 11
17:32:17.242 > The M0 and M1 pins is not set, this mean that you are connect directly the pins as you need!
17:32:17.340 > AUX HIGH!
17:32:17.352 > Complete!
17:32:17.363 > 3        
17:32:17.420 > Available buffer: 0 structure size: 11
17:32:17.461 > ----------------------------------------
17:32:17.505 > HEAD : 0 0 0
17:32:17.520 >
17:32:17.523 > AddH : 0
17:32:17.535 > AddL : 20
17:32:17.544 >
17:32:17.547 > Chan : 100 -> 510MHz
17:32:17.570 >
17:32:17.573 > SpeedParityBit     : 1 -> 8O1
17:32:17.605 > SpeedUARTDatte     : 11 -> 9600bps (default)
17:32:17.653 > SpeedAirDataRate   : 101 -> 19.2kbps
17:32:17.693 >
17:32:17.696 > OptionSubPacketSett: 1 -> 128bytes
17:32:17.733 > OptionTranPower    : 11 -> 10dBm
17:32:17.769 > OptionRSSIAmbientNo: 1 -> Enabled
17:32:17.805 >
17:32:17.809 > TransModeWORPeriod : 101 -> 3000ms
17:32:17.846 > TransModeEnableLBT : 0 -> Disabled (default)
17:32:17.894 > TransModeEnableRSSI: 0 -> Disabled (default)
17:32:17.942 > TransModeFixedTrans: 1 -> Fixed transmission (first three bytes can be used as high/low address and channel)
17:32:18.057 > ----------------------------------------
17:32:18.101 > The M0 and M1 pins is not set, this mean that you are connect directly the pins as you need!
17:32:18.199 > AUX HIGH!
17:32:18.209 > Complete!
17:32:18.221 > No response from device! (Check wiring)
17:32:18.265 > 12
17:32:18.268 > ----------------------------------------
17:32:18.311 > HEAD : 0 0 0
17:32:18.326 >
17:32:18.329 > AddH : 0
17:32:18.340 > AddL : 20
17:32:18.351 >
17:32:18.354 > Chan : 100 -> 1000MHz
17:32:18.378 >
17:32:18.382 > SpeedParityBit     : 1 -> 8O1
17:32:18.414 > SpeedUARTDatte     : 11 -> 9600bps (default)
17:32:18.462 > SpeedAirDataRate   : 101 -> 19.2kbps
17:32:18.501 >
17:32:18.504 > OptionSubPacketSett: 1 -> 128bytes
17:32:18.542 > OptionTranPower    : 11 -> 10dBm
17:32:18.577 > OptionRSSIAmbientNo: 1 -> Enabled
17:32:18.614 >
17:32:18.617 > TransModeWORPeriod : 101 -> 3000ms
17:32:18.654 > TransModeEnableLBT : 0 -> Disabled (default)
17:32:18.703 > TransModeEnableRSSI: 0 -> Disabled (default)
17:32:18.751 > TransModeFixedTrans: 1 -> Fixed transmission (first three bytes can be used as high/low address and channel)
17:32:18.866 > ----------------------------------------
17:32:21.878 >  ---------------------------------------