Hi @ROSEISLE,
Do you use Reach M+ LoRa radio module? Can you post a photo of LoRa to Reach M+ connection, please?
LoRa radio PWR LED should become solid green after you power it.
Do you want to accomplish the RTK communication over the LoRa with a non-Reach base?
It seems you need to install the serial driver. Please follow these steps: