As the title suggests. I was having multiple issues with posts, upvotes, downvotes and comments not saving.
Deleting the app and reinstalling has refreshed the whole thing and it now works better than ever.
Posting here in case anyone else had similar issues.
You don’t need to delete the app, but you do need to re-log in to be able to vote or comment (presumably because of the hack yesterday).
Go to accounts tab, and delete your account (from the list of logged in accounts) and then log back in. You may need to “add it” a second time before you can delete it.