Topic name says most but trying to do stuff via tablet when engaged in battle and can't leave

The Stuck in Battle button only works if you are literally stuck in a battle according to the server. To my knowledge, I don't think it even happens anymore.

If you want to exit a battle, you have to either Retreat (not always available), defeat your opponents, or lose.

I can't even choose an action because I'm on a tablet except stuck in battle

Everything should function on a tablet, although our website is designed for computer web browsers.

You should be able to tap on the attack icon to select attack, then tap on the enemy's image to select the target. Then tap on the "End Turn" button to complete the turn.