So basically it's not possible to add any matter over thread devices with iPhone and tuya app, it's keep asking for thread border router. Pairing working completely fine with android system.
I can use iPhone for pairing with other apps without any issues, or I can pair matter over thread devices with tuya iPhone app but only if I use 3rd party thread border router, router which already shared credentials with iPhone.
The reason is I think because tuya matter over thread hubs don't share credentials with iPhone. Same with android, but its working ok.
Video:
Hub virtual id: bf01ab90188976b3f7xqtl
Time 16:41 UK time zone.
Thanks.