It technically isn't disabled; it's just that most account-activation emails aren't being properly transmitted to the registration script. We will take care of it as soon as we can. Please stay patient.
Sorry for your inconvenience!
Yeah, they both have a cooldown of 48 hours in case you lost. You don't need to beat them both again, just re-battle the one you previously lost against.
Best regards
Split your topic. Please don't use other player's topics in order to receive help for your own matters.
What kind of error are you writing about? Mind going into detail?
There's a NPC in Celadon City called Task Master. He wants you to catch specific Pokemon for him in 24 hours. He will rate its IV's and reward you in the same way. The higher IV'd the better.
It's maintenance-locked atm; even before then, it was inoperable enough due to the fact that account-activation keys weren't being properly transmitted to the website, but we'll see if that's sorted out after this maintenance period.