Either they are higher rated and hoping that you make a mistake, or they are total patzers who will waste your time and play every single game out to it's final conclusion because they think it's bad sportsmanship to do otherwise.
There are no legal pawn moves
The rooks are useless without open files.
The dark square bishop could move to d8 but that's easily defended.
The only option is to sac the light square bishop for two pawns but that could take some maneuvering.
It's pretty much drawn.