Wyvern's Hoard review for Octane AI: Advanced Quiz Maker

I got on this app when the basic plan was $9 a month. The charges went up to $40+ and then $60+, then in the last two months jumped to $191 per month. I was not informed of any of it. I don't offer quizzes on my store or use most of the features. Developer refused refund request. I've uninstalled due to their underhanded means of taking money from shop owners.