Locked out of my dashboard

Ok lets start with I tried to changed my google ID within the google adsense widget. There was already a ID in the widget, but the problem was it wasnt mine. In order for me to authenticate my website with google this ID had to change to my personal ID(I also would like to start getting paid for running the adsense on my site: another reason I changed the ID. Once the ID was changed I was locked out. I can not access my site at all.

Please someone help me and tell me exactly what I did wrong.

Thanking you in advance,
Gtoi