Its also very slow and whole UI is extremely buggy. Buttons would often be in improper state, download would start very slow, sometimes progress bar wouldn't sh

Its also very slow and whole UI is extremely buggy. Buttons would often be in improper state, download would start very slow, sometimes progress bar wouldn't show up even though download is happening. Resume would fail, caching would fail and almost nothing would give you any reasonable error message or something to solve the problem. It;s probably the buggiest piece of software I have ever had to use. The backend service might be good (or not) but the basic store app feels like something written by an student.