Russian, decoder training froze

Memrise Bug Control Android Bugs
1

@Joshua @BeaTrisy
Hi all i am trying to learn Russian but on the “de-coder training” module it will not proceed. I can continue in other areas of the app but everytime it goes back to this decoder it gets to a point and stops please help.
I have a Samsung S7 and just subscribed for a year.

Screenshot_20170522-004011.png1080×1920 201 KB

thanks for any help

2

If translated to latin alphabet you typed mac not max