I had my Gremlin that was flying fine months ago, shelved it to fly other things and just came back to it. It flew fine, but the battery alarm was immediately going off for 3 different batteries. I checked the batteries and the the voltage was fine. So I quickly plugged it into Betaflight to check the battery alarm voltages (they were set fine before but I didn't know what else to do). In my haste I didn't think to check any of the other settings, dropped the voltage alarm by a couple tenths to see if it helped. Went back out to fly it again and it was an unresponsive brick. Plugged it back into Betaflight and realized all the receiver setting were back to default. Now no matter what I do I can't get it to work properly. I'm using a Frsky XM+ receiver on SBUS. The receiver has a green light which I believe means it's bound and good to go with the TX. The FC is responding fine to movement, the motors spool up manually in Betaflight. Every time I try and save the config as SBUS it comes back up as Spektrum. I'm getting zero response in the receiver section, regardless of which option. I don't see any broken connections. I'm not sure if I'm missing something as it's been awhile since I was in Betaflight, but I went through the Gremlin build video to check for ideas but can't get past the receiver config/response. Ideas? It was a functional build at one point.