crap sentence upon initial registration

[eae]

"However, this board requires account activation, an activation key has been sent to the e-mail address you provided."

That should read either "However, _since_ this board..." or "However, this board requires account activation, _so_ an activation key..." or something else that is grammatically not crap.

[Hawknc]

That is probably default phpbb text. Or davean put it in there to mess with people.

I'd put it about 50:50 either way.

[phlip]

It's just a comma splice... the pedantic punctuation would be "However, this board requires account activation; an activation key has been sent to the e-mail address you provided."

Neither of your suggestions are ideal, as they suggest that one clause is causing the other, when instead they're simply two related facts.

Also: that's the default phpBB text, so the correct people to bug about this would be the people who make phpBB.