All devices connect to network except Iphones. 

The deco is set up on as the router, connecting to a starlink router in bypass mode, deco gives out the Dhcp.

I have turned beamforming and fast roaming off to see if this makes it work.

And also, have carried out forget network onthe Iphone, and tried to re-join, with no luck.

Laptops, sky and other phones work fine.

Outside the building we have eap devices, to another building on a mesh system , running off the same router, and using an oc200 controller

Any help appreciated