two account same "mail"

[Javier Herrera Núñez]

I create an account in atlassian with google. 

I have an alias in this account (the old user), and Jira and google decided to use de mail alias angel.plata@autocarpe.es and not my mail javier.herrera@autocarpe.es

Next time I log in with my real mail javier.herrera@autocarpe.es not with google it creates a new account.

I would like to join the accounts.

Can you help me?

Thanks.