Messenger app won't send or receive messages, I've had to uninstall and reinstall multiple times a day

I've got the app, it's updated, I've cleared my cache, I've got enough storage, my wifi/data connections are solid and every other app works. Messenger, I've had to uninstall and reinstall it several times a day for 2 weeks now for it to work. It constantly says "waiting for network" but that never changes. I've restarted my phone, turned off my wifi and data settings, swapped between them - everything I can think of and nothing is a permanent fix. Reinstalling it fixes it for a few hours MAX (sometimes for as short a time as 10 minutes~).

I've reported the problem dozens of times of the app, I've tried everything to get ahold of someone about it including messaging both the Facebook and messenger pages, but I can't and the help center just sends you in circles.

Does anyone else have this issue or know what I can do to fix it? Or have a way I can contact them?