Lags

Im using an iPhone 5 on wifi and it lags. I have no problem with all my other apps but this one.
- Subscription page doesnt load properly. Had to reload and reopened it a few times for it to work.
- Sign in page failed while having the right email and password. (multiples times)
- Sign in page doesnt show that you are signed in. It just stays there like you have to enter your password again.
- Loading time way too long. Way too long.
- Lag when opening a file. Wasnt able to do anything, my phone just bugged for at least 8 to 10 seconds.
- Updating library never stops searching for updates.

... and I just download the app. I might find more...

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