UPDATE: I've given up and returned the AX50. I'm now back on my basic ISP provided router, which doesn't give the Parental Controls that I found really useful on the AX50, but it does give me a...

Hi @Tweakfiend, Firmware was updated through the router web UI 'check for update' function.

Hi @Kevin_Z Unfortunately that hasn't solved the problem - the internet connectivity issue occurred again this evening. Any other ideas, or do I need to return the router?

Ah, understood @Kevin_Z, thanks. I've now updated the LAN DNS servers and rebooted. I'll see if that improves things over the next couple of days.

Hi @Kevin_Z Yes, I can still ping google.com on the router's web interface when all clients lose the internet, but if I try to ping google.com on my computer it is not accessible. I had already...

@One_Eye I'm experiencing a very similar issue with an AX50 - does this accurately describe your issue too? https://community.tp-link.com/en/home/forum/topic/225590