ELRS Nano Receiver
Both the EP1,s had the same issue. never bind on the first power up. One was a F7 FC the other was a F405 Wing. The BETAFPV ELRS Nano receivers both connected the first time and on every first time since. I am still using the Happymodel transmitter module. The F7 is on a Rekon 5 The other on a 60"Flying Wing !