Yet another rewrite problem (?) again

[islander]

Any help appreciated!

Did the domain name stay the same?
Or any change from http to https?
Or move to different sub-dir?

Are you able to get into the admin, and only public pages dont work?
If you can get into admin, you may want to look at settings to see if URL needs updating.
and if so, you may want to try the Migrate plugin which can correct links in pages.

edit: sorry, I missed the part that said you could access admin.

also, is the  "%parent%/%slug%/" light grey? If you click in that field, does it go blank?

Maybe try to flush the cache?