Uploaded a Adafruit IO sketch and don't know what stage of connecting to adafruit-io? Easy use this board
Also---
Has two 7 Seg Displays to read the dBM signal (converted using code from negative to 0-99 format **99 being best signal. Both the RFM and Adafruit IO sketches have code that you can query the signal strength -- take that number and convert it to a 0-99 scale for easy troubleshooting :)
A bank of 8 dip switches --- make you want to change a "node" (RFM95 FRM69) to a different assigned number ? Use on-on-off-on-on-off-off
A W25Q32FV to store data --- power outage or even low sleep