Latest update takes styles I had away unless I pay? – Prisma: Photo Editor, Filters Review

I've been enjoying this app for a couple of years, and I understood when they started charging users. But initially, they did the right thing and only charged for new features--they didn't charge existing users for features they'd been using for free for months or years. That all changed with the latest update, thought the update description gave no warning of this. About 8-10 of the best styles--including the two I use most--have been taken away unless I pay them $20. Feels like a skeevy way to do business. I tried clicking "Restore Purchases", thinking it was a mistake, but the feature doesn't do anything.
Review by Johnmarinville on Prisma: Photo Editor, Filters.