I got the car back today... the result is 10 out of 10!
You cannot see the marks, color difference or anything... you cant even feel it if you run your hand over the areas that were cracked and with 1-2mm thick flakes.
I found my paint code sticker behind the filt in the drivers side of the car about 20 cm down. It was L741 as suggested here on this forum so thanks for the tip from everyone who helped.
They managed to spot-repair it so the price was good. I paid 290$ incl. delivery of the car so thats great, next time I wont panic as much
Thanks again everyone !