Frequency displayed/calculated? incorrectly in 01_getConfiguration example

Hi, I successfully managed to connect an ESP32 with the E220-900T2D board and upload the 01_getConfiguration.ino example from the library. However, I think there is an issue with the display of the frequency:

Success
1
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HEAD : C1 0 8
 
AddH : DF
AddL : 40
 
Chan : 18 -> 428MHz
 
SpeedParityBit     : 0 -> 8N1 (Default)
SpeedUARTDatte     : 11 -> 9600bps (default)
SpeedAirDataRate   : 10 -> 2.4kbps (default)
 
OptionSubPacketSett: 0 -> 200bytes (default)
OptionTranPower    : 0 -> 22dBm (Default)
OptionRSSIAmbientNo: 0 -> Disabled (default)
 
TransModeWORPeriod : 11 -> 2000ms (default)
TransModeEnableLBT : 0 -> Disabled (default)
TransModeEnableRSSI: 0 -> Disabled (default)
TransModeFixedTrans: 0 -> Transparent transmission (default)
----------------------------------------
Success
1
----------------------------------------
HEAD: C1 8 3
Model no.: 20
Version  : B
Features : 16
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The output says I'm dealing with a 433MHz device, but it is a 868MHz device. The channel is correct (18) but the base frequency is not. I configured my E220-900T22D to channel 18 with Ebyte's configuration programm so 868,125MHz should be displayed. See attached screenshot from the configuration tool of Ebyte. Best, Gulpman