I'm trying to register for the nexus slack but when I input my email, it gives me an error:

Failed_token revoked

Also, I have been gpu mining (using skminer) for about 12 hours now but my wallet is still showing 0.00... Is this normal? How often should it update?

I also tried cpuminer and that was showing that I had mined 1.7 nexus coins, but the wallet is still empty.