

Bottom Horizontal Edge cutting issue
Hello everyone! Maybe you can help!
I use Cameo Silhouette 5 PLUS and I cut stickers. The sticker sandwich is made of vinyl paper and foil (cold laminate). I've been struggling with die-cutting stickers when it comes to the bottom edge when it is made in a straight, horizontal line. The knife seems to pierce fully through the laminate and vinyl but doesn't make it fully through the paper below the sticker. The attached screenshots show the issue and where it occurs.
The mat is new and the knife is new and sharp. I use a knife holder and knives from AliExpress as they are cheaper and I believe they are not the issue cause I already had many successful cuts with them.
Do you happen to know why the Cameo struggles with cutting the horizontal straight lines at the bottom of a sticker? I really can't figure it out.
Thank you in advance!