Thank you for the help. It did consider me as a new player because of the account setup thing and didn't change back after logging out. The command worked and got me back into my old character.

In a world I and my significant other have been working on for a while my character reset. I loaded up it told me the objective, my character was green (instead of yellow) and I had the starting resources. I am the host of the world. I initially thought that it was due to linking my account to steam ...