Works for me (I just upvoted this fine), but as @tone212_ said I did notice that the counter has moved (Firefox on desktop)

They’ve been moved on my view (using Safari browser). Now next to post timestamp.

Upvotes look ok but I can’t sort by anything except Hot. iPhone browser no app.

Check your account settings are the way you want them to be. The latest update seems to have either added new settings with strange defaults, or borked up your existing settings.