Oh Jesus Christ

I paid for the premium subscription to get no ads and more examples of words used in context and I find the app very useful. But there are some frustrating bugs. I have had to uninstall and reinstall the app a few times. Usually when I have done that it solves the problems temporarily but the last time I did a reinstall I lost all of my word history which prevents me from reviewing vocabulary, an important part of learning a language. It also did not fix the latest bug which are seemingly random lines in the history section being blacked out.