can't connect/join the dragino LG01-N with ST AT command region AS923

[floflofloflo]

Hello, I tried to compile the EWARM project for ST module (CMWX1ZZABZ murata module with STM32 inside) AS923 version by defining the correct define but there is error at compilation level. So I decided to give a try to the hex files provided -> I programmed the hex file for 923 region, seems OK I have a welcome message. But right after the welcome message (version xxx showing + device EUI) then immediately the module sends data 2 times and I dont know what for (2 Tx messages are showing). Anyway I configure then in single frequency with AT+CHS command on 923400000 Mhz (same as the dragino gateway), I also configure OTAA join mode, I make sure the APPKEY/DEVEUI/APPEUI are same as on TTN, but I cannot see a succesfull join command on my side, I cannot see any data received on the 'logread' of the dragino and I can't see anything on the TTN console.
Have you encountered the same issues? Anything I may have missed?
Thanks.