I have a client with two brand new RING Cameras purchased a week ago that will not connect to an L009-2HaxD Router running RoS 7.17.2.
I read through this post and none of the suggestions helped so I experimented a little and got them working.
They did not like the AP using 2GHz AX - changed to 2GHz N and away they went.
The camera’s then promptly downloaded an update and were put to use.
I haven’t changed the clients config back to use AX as yet in case more cameras need adding. Hope this helps someone.