Fenix 6x will not find wifi network

My Fenix 6x recently stopped finding wifi networks. It says no network found and then freezes completely requiring a hard reset. I’ve seen other users post this problem but not a solution. Has anybody managed to resolve? All software is up to date and I removed all downloaded watch faces etc (which I read somebody mention as a possible solution).

The watch is still under warranty. I chatted to support today but the guy was really unhelpful and just expected me to send the watch off, which I don’t want to do as I’m marathon training.