My iPad, running latest iOS, suddenly didn't want to connect to the internet anymore. It connected to WiFi, got valid IP, but no browser or data flowing. it worked a few days ago, and now suddenly stopped. 

I've got an Archer VR600 and 3 Deco M5 (latest software updated) points. I tried connecting to all, but no luck. I tried connecting to the router directly (5GHz network) and my old Apple Express, no luck. I tried connecting to my phone's hotspot, and that worked fine.... strangely enough! 

on the iPad; I rebooted, I reset the network settings and as last resort I reset the entire iPad. But it's still not connecting (when trying to restore backup from cloud). 
on the Archer, I see the iPad connected to a mesh point. 

anybody got any suggestion or idea? Would be waste to throw away a perfectly good iPad because of this.