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It's giving me this error on my iPhone on Classic iPhone.
I set up my vip with yhe same email I use for my PC account.
When ever I try to log into both accounts at the same time it skrews up my iPhone account and I am unable to login for up to five minutes.

For me it screws my PC account and I do have suddenly an other account (with a new Graal#). I do have to wait for a few minutes and than it´s fixed... really starts to annoy.

Yeah it's only when you use VIP.
But if you login to you're VIP account a few minutes before it seems to be fine.
It seems to login to you're iPhone account on you're pc if you try to log in to both at same time.