Hi, I just received my highest rated win over a 2100 player. Unfortunately it was only because the site crashed multiple times this morning and it happened to be my opponents move. Could this be reset or wiped please?lichess.org/uOfsCWwu
I don't think it can be reset, sorry.
This cannot be done from the Lichess admin user interface, but I suggest you contact the Lichess technical support. They might remove it manually from their database.