Cant find tt account of a person?

Ok so basically im in a gc with them and they haven't been active at all and I check on their pfp and their account is just goen not even saying they were b anned or de leted so it would be a great if someone could h elp me their user was bibbleblabble and had this image of a dog similar to the one in the image and im worried about them even on their dc server they won't respond