I've never known anything so frustrating
I think you should have been able to join by typing in the number 10274 - but that didn't work.
I have created a new e-mail account, just so I could try out enrolling as a new player and I(Moniker that is) then invited this player (Ogram) to join this team and, yes, it did send an e-mail to Ogram's mailbox but when Ogram tries to click on where it says click here to join, it also doesn't work.
I've just sent one to daff and I don't suppose she will fare any better.
Seems not to be my fault after all - so - I'll call it a day for now, and tomorrow I'll try again.
It's disappointing