I can’t bye the $4 pass – Perlypop: Perler beads Review

I was so excited to make a cool perler bead pattern and when I try to make it the size I want it said to bye the extension so I tried to get it on my iPad but it was stuck loading and I tried restarting my iPad and I even deleted and then redownloded it and it was still stuck in loading please let me know how to fix it because it looks like a good game and I want to use it.
Review by wet butt cheeks on Perlypop: Perler beads.