well after a few days of bashing my head in trying to figure it out - I DID!!!!!
So, here's the solution to my problem - I had 2 step verification on - after I had changed my password google and its awesome security features wouldnt let an unknown device access the account.So I disabled 2-step verification and I was able to add gmail back onto my phone. yeaay! I have my all in one calendar back!
now..... the next question is.... if I add the two step verification again but would like to add a youtube video off my phone will it let it..... I'll post when I find out.