Mold on Vinyl few days after placement on tshirt.

[Nikolay 0]

this dots appears about a week after placement. 
Vinyl is from " Stahls "

[Dakotagrafx 6,673]

Pretty sure that is bleed thru and not mold.  For those materials there as other have that say no bleed thru 

[Dakotagrafx 6,673]

How much was the licensing fees from adidas?

[Wildgoose 3,746]

Yep that's definitely die migration. Most of Stahls are susceptible to this when light colors are used on dark polyester. Some are built to handle it like the silicone dye sub and the Thermo film.