Hi there,
So sounds like you are making it happen , I like it… So on the errors, something I have learned If using certain HARDWARE and having the other BLE LIB’s hanging around on the IDE you will get wierd stuff happening, Check you do not have for example ArduinoBLE and the RPC_ble stuff. clean out any of the installed that you don’t need for the present WIO-Term build it will go faster and smoother.
YMMV 
HTH
GL 
PJ 