Decent, with a few glaring needs – Ravensburger Puzzle Review

I've always respected Ravensberger, so I hope they'll continue to improve this app. I'm not a person who whines about spending money on apps, if they're worth it. I spent money to buy the app and I spent more on coins to buy puzzles. However -- it just feels wrong, the way they've done it here. There are no ways to earn coins to purchase puzzles. Getting 3 stars, with tools or without, gets me nothing. I bought a puzzle pack in the beginning, not realizing this, and really regret it, as I only like a few of the puzzles in the pack. It basically works out to about a dollar a puzzle, unless they're part of a pack, then it's discounted 10-30% per puzzle (but you have to spend about 7-8 actual dollars in coins). Something I've seen mentioned many times is the need to be able to lock the puzzle frame to the table, and I could not agree more. It is so frustrating to be rotating a piece to fit it and instead pick up the entire puzzle and rotate that. I've seen this in reviews from several versions ago, so I'm not sure they care or intend to fix the problem. I've downgraded a star for lack of customer service -- I used the "contact support" button weeks ago with a question, and haven't heard anything back. I'd like to know what happens to my coin purchases if I delete the app and then reinstall at a later date. Until I know, there is zero chance of spending any more money on coins.
Review by Pheebers on Ravensburger Puzzle.