Not paying attention.

So After testing out the first couple of beta phases I decided to wait and not spoil anymore, due to someone getting into my paypal account I changed almost all of my passwords/emails to new ones..but seem to have forgotten my SE account..'

Today I decided to check the beta client to see if there was an update, but it couldn't connect so I thought maybe there's a completely new one..checked my old email and found one saying I had to register by the 31st of last month for phase 4...!@#!..

Anyone able to tell me if I can fix this..or just wait until phase 4 starts and try to get in? I had access to all previous phases and figured it was a 1 time thing.

You're good to go for Phase 4. You were already in the previous tests so there's no need to reregister.