This question already has an answer here:
So, I have a Stack Exchange account. When I first created it a couple of years back, I used my "Google" credentials. Fine. Then late last year I began work with a company which uses Atlassian Crowd to manage IDs and logins, and at some point my Stack Exchange account must have become associated with my id at that company. Now my Stack Exchange account is inaccessible.
But it does exist.
Is there some way to reconnect to my Stack Exchange id?