It's probably because your account is still blocked while it is being renamed. Wait a couple hour and if that doesn't work then contact staff about it. No one has blocked you on the MLP wiki just so you know.
No, there's no interface changes needed. All you need to do is copy these pages & contents from this import log (except the redlinked one, that turned out to be unnecessary) and it should work. Hope this helps!
When I heard that I was blocked for as long as I thought to myself no what should I do now ... I started to Vienna I thing I should have done it but I made a new account which was blocked that afterwards also and who then also ... It was really stupid of me but I'm just addicted to mlp wikia so you would take me back please??? Probably not but I just want to say what I think of that block.