Issues with adding new acct to site where i had old/different wpmudev acct

My name is Ioan Elvis Sersea.
In the past, I registered for a wpmudev acct via my former e-mail:
Now, I wish to register the same site, under my new wpmudev acct, with the e-mail:
I'm having trouble getting the dashboard plugin to work and the old wpmudev plugins to update on this site, so it seems I need your help in changing it to my new wpmudev acct.