Trying to log in to my Developer Edition using: adam@trailheadexperience.demo + my password. Every time I get an error message letting me know my credentials are in correct.

Ive tried multiple variations: adam@/agitto@/gitto@ - as well as my password. Nothing works. 

Is there a way to reset my log in credentials? Or is there somewhere I am able to retrieve what my log in should be? 

Any help is seriously appreciated!!! 

Trying to log in to my Developer Edition using: adam@trailheadexperience.demo + my password. Every time I get an error message letting me know my credentials are in correct.

Ive tried multiple variations: adam@/agitto@/gitto@ - as well as my password. Nothing works. 

Is there a way to reset my log in credentials? Or is there somewhere I am able to retrieve what my log in should be? 

Any help is seriously appreciated!!!