images shouldn't be a problem.
try and keep the sizr dow - but if you've posted them before - no reason you shouldn't still be able to post them.

To start with contact tronxy and ask for a new board.
hopefully they'll send you one.

And you're probably better off leaving the baseplate off and just making sure none of the cables are dragging on the ground.
It'll keep everything a lot cooler - as you've got it in a box (assuming you still have it in a box) that might be an issue.

I would NOT tell tronxy that you've enclosed it.
If it doesn't come with an enclosure then I suspect that would probably invalidate the warranty.

My pei sheet sticks pla at anything from 50-65.
And that's running the first layer at 40mm/s with some really intricate parts.