Hello damoncz, I noticed that is your first post so welcome to the forum!
I've also used store bought blue cheese as an inoculate on all 3 of my blue's to date, which means I am still a blue newbie, but none of mine got the white fuzzy mold on it like yours have. However all three did smell a bunch in the early stages
Just curious, does the white fuzz look like the P candidum molds used in Camembert etc making? Bunch of pictures of that in that Board