@Kevin_Z TP Link technical support hasn't been any much helpful. I was advised for soft reset, hard reset and tweak in settings as below. Despite all these the issue persists (random disappearance of...

@Kevin_Z I did a factory reset last night. Today morning the issue popped up again, so the issue persists. It indeed looks to be a bug in the router. Do you have any further suggestions?

@Sanket_C80 I am also facing the same issue quite frequently. Firmware Version: 1.5.0 Build 201022 Rel.53112n(5553) Hardware Version: Archer C80 1.0 At random times, the router reboots itself. All...