iMessages not activating

Hello there.

so I toggled my iMessages off earlier; And when I went to turn them back on, it shows an error of activating. I noticed my phone number was grey and there was a spinning wheel trying to verify it- so I went to my profile and had to re-add my phone number for some reason.

After that, I updated to the latest software, tried all the tricks I’ve seen on forums (airplane mode, resetting, turnings phone off and on)- but it’s just sitting there trying to activate (also FaceTime). I’ve never had this issue before, so I tried calling my provider and they said it’s not an issue on their end as everything else works fine.

Is anyone else having this issue or know how to definitively fix it? Thanks in advance