Solution found.

Supplier have sendt me ABS instead of the PLA i ordered. they even marked the roll with a PLA sticker.

How I found out? I filled a paper cup with aceton, stuffed a piece of what i knew was PLA and with a piece i knew was ABS into the cup, along with a piece of the roll i suspected was ABS.

i let the pieces bathe for about 30 seconds in the aceton, then pulled them out. The PLA piece would not stick to my finger at all. while the known abs one would stick to my finger, and so did the suspected roll.

So anyone else who starts suspect if you got the wrong type from the supplier, you can use Aceton.