Anker a7722 power/bluetooth not working

My a7722 died last night (I wasn’t able to charge it immediately when the red light started flashing) so I charged it to full. When I got my iPad back in, it wasn’t connecting. The a7722 was showing up in my bluetooth, but it wouldn’t connect, so I did “Forget Device” which usually works fine. Now my bluetooth won’t even detect the keyboard, and neither will the power/bluetooth button on the keyboard work. No flashing, no lights, and FN+Z doesn’t work, either. Any suggestions?