I’ve narrowed the p2p connection problem down to the wifi channel settings on my router. If my router is set to optimise the channel and use 20, 40 or 80 MHz then the eufy 2K wired doorbell occasionally drops out with the p2p connection error. When I disable wifi channel optimisation and only use 20 MHz then it reconnects instantly. Just wish my router would retain the settings; it appears to reset itself and default to channel optimisation which makes the doorbell flip out!