The thing is that Nanopool is optimized for multi GPU/CPU RIGs, that means while mining with a single GPU/CPU or low-efficient one,
you'll receive a false-positive notification each time your miner does not manage to send a valid share to the pool for 20 minutes.
If this is the case, you can simply replace your email in the miner configuration with a passphrase that will be your new password for your account settings.
I hope this helps!
Thanks. I got it now. The email was in my command line that I supplied for the miner. I wish they explained it in a more clear form on the website.
That is right. I can assure they are working on many improvements now. And one of them is a new, clear FAQ section.