Seeed S2105 on chirpstack lorawan RAK7244

I have a RAK7244 running chirpstack v3 which sends sensor data via MQTT to my local server. I have a working Seeed SenseCap CO2 sensor setup and working correctly. I want to add a Seeed S2105 SenseCap to the same network but can’t get it to join. I am not a programmer and have gotten lots of good help from various forums to setup my network. I’m stuck on this problem and have tries about everything I can think of. Any help or suggestions would be appreciated. I have reached out to Seeed and chirpstack forums but so far no luck.
Thanks in advance.
Bob Grattan
Ashland, VA