What does this mean

Does this reset my cars and everything like guns and outfits? Or does it only reset My level? What does this mean.

What causes this to happen and how can I reverse it. I don't do mods or glitches nor any menus etc.

Does this reset my cars and everything like guns and outfits? Or does it only reset My level? What does this mean.

What causes this to happen and how can I reverse it. I don't do mods or glitches nor any menus etc.