Unable to Add PNID

I have just purchased a new WiiU, and I am trying to add my PNID, which I had previously set up. My WiiU is modded with Inkay installed, and I made sure to enable Pretendo. When I try to connect my PNID, however, I get a 102-2613 error. Is this related to Pretendo being under maintenance right now?

It might be related?

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According to WiiUBrew, 102-2613 translates to:

WRONG_ACCOUNT_PASSWORD_OR_MAIL_ADDRESS

Did you own a Wii U before you bought the one you’re currently using? If not, then I’d say verify your account details on the main Pretendo website and try again. If it does end up being maintenance issues, then problem solved.