Beginners problem with my Heltec Miner

I am having problems with my Heltec miner. I went through the entire installation process yesterday. I have also seen the miner 1x in my helium app. there is an orange light, green, blue and white.

there is bluetooth connection, the block height keeps changing and I can access it via IP.

however, it is no longer visible in my app, I also do not see it in the helium explorer. I also get the error message that there is not enough balance.

can someone support me