How did you “reset it to defauts?” On my case I did it via Local Console. I have the Helium version and it fails to reach SenseCAP servers to OTA firmware updates. How much time does it past since it upgraded automatically on your case? I’ve created a new thread.
Powered by LuCI / OpenWrt 21.02.0 r1-20220322 r16279-5cc0535800
Model M2-US915
Build Version r1-20220322
OS Version 0.9.24-27