Bulbiversary referral link won't work

I’ve referred Bulb to a friend and have tried using the link provided by Bulb sent to me via email regarding my first Bulbiversary, but the link doesn’t work.
A page saying it there is a ‘temporary server issue’ appears. This occurs using both Explorer and Chrome. Any ideas on a fix?
If I give my friend the normal link in my Bulb account, will he and myself still get £100 each or is it just the normal £50 each?

Oh no! If you give them your normal link that should work fine, yep