Be careful - charged twice
I was charge when I bought the app in apple store, and when using the app, all of the sudden, it seemed I didn’t have the full version so payment was needed again. I paid a second time thinking I would be charged only once but to my surprise, they charged me twice. The exercises are ok and easy to use. Unfortunately the fourth exercise Key word Transformation doesn’t work well. Every time i fill in the answer and click in finish test, the app shuts automatically losing all the answers. The only way to see the right answers is ending the test without doing the exercise - very annoying really. I wish it worked the rest of the exercises that actually are quite good. could you fix this and return second payment please? There is no customer service number/email to claim! Thank you