Version 2.94_17003_memrise lags after passed task

Memrise Bug Control Android Bugs
1

Phone Samsung A3 model SM-A300F.
Android 5.0.2

Yesterday the memrise was updated to the version 2.94_17003_memrise.
And I got a long delay after every task because the software lags a lot after every task. It makes learning unconfotable. I read that new version has new download module, so I suppose that this revision makes the lag. Please help how to get previous version.

2

I’m seeing this happening on the website (Decks), too, but only when typing answers using Chinese characters.

3

The app was updated to version 2.94_17117_memrise, but result the same, I am getting a lot of lags.
Do you know, can I return money for my subscribtion?

4

I have the same problems with Samsung S9 and version 2.94_17285_memrise. The learning due the lags is not possible.