Write to support@cypresstech.net. Please include the app name, the version from Settings → About, your phone model and what happened.
Basic strategy for a six-deck game (dealer stands on soft 17, double after split, late surrender, 3:2), then Hi-Lo card counting: the running count, decks left, the true count, bet ramps, insurance and the Illustrious 18 index plays, then a reality check. The final exam is a whole shoe, graded on strategy, counting and betting.
No. Practice uses play units with no value. Nothing can be bought, won or cashed out.
Don't count on it. Blackjack has a house edge, and the course states it. Counting is a real skill with real limits: the edge it can give is small, the swings are large, and casinos can limit bets or refuse play. The reality-check lesson covers this.
Settings → Remove ads. It is a one-time purchase of US$2.99 (shown in your currency before you buy), not a subscription, and it removes every ad.
Open Settings → Restore purchase while signed in to the Google account you bought it with. If the price does not show, check that you are online and that Google Play is up to date.
No. Ads never appear during a lesson, drill, practice table or exam. The free version shows a banner on the course home, Statistics and Settings screens and may show one full-screen ad after a session has finished.
Yes. Every lesson, drill and exam works with no connection. Ads simply do not appear.
Only on your phone. There is no account and no cloud copy, so it does not move to a new phone and is erased if you uninstall.
Statistics → Reset statistics. It cannot be undone.
Where a consent choice applies to you, Settings → Privacy choices opens the form again.