Hi! I’ve started creating a an image-based course https://www.memrise.com/course/2096353/picture-wordlist/
and on Android Phones it shows a blank “page” after you complete a new word learning session or a review. Five people with five different android phones have used it so far and everyone has faced the issue 
Eveything is fine on a web browser though.
I’ve also created a similar course https://www.memrise.com/course/2086017/concrete-nouns/
and it has the same issue…
I’ve been having this with every course on my android today. An image-based course (american sign language 1) is sluggish while testing on the website, I haven’t tried it on the android today.
I’ve tested my courses on an iPhone X and they work 
So it seems there is a problem with Android app
I’m still getting a long delay after finishing a learning session or a review session. Is there anything known about this, any suggestions other than restarting my phone (I tried that)?
Hey, we released a fix for this bug after completing a session. Please update to the latest version and please let us know if you’re still experiencing this bug.
Now it freezes for me, takes more than a minute to load a session. Worked without problems before.
still freezing even after today’s update. Works more or less OK with short courses, seems like longer ones are causing the problem.