Dev,
I'm running my wallet in arm-based SBC like raspberry pi for staking.
I successfully built wallet from source code but it seems that staking is not working (tested for 48hrs).
I faced several compile errors related to scyrpt() and scrypt_core() which are caused by lack of arm version asm file.
So I got scrypt-arm.S from other coin's wallet source code then I finally got QT binary without errors.
Is there any possibility that replaced and newly linked asm file causes staking problem?

I sent them a message a couple of hours ago to see what's happening, will post if I have any news.
Bittrex: Market Offline - Database maintenance
Anybody knows more details, when the trading resumes?