Fascinating. I removed the app from store. Cleared all data and tried web. Web works. Then installed apk again. Web didn't work and also shows black screen like mutiny can't load and hangs in a bootloop. 

 I think I found the problem. Your app needs the Google play services installed. I just read it in Aurora Store. Maybe other without google services can reproduce my problem. Would be great if you can find a solution without those dependencies.