I’ve had a MK4S for over a week now, and 100% of the prints I’ve tried to make on the textured sheets have partially or totally failed. PLA prints beautifully on the smooth sheet, but PLA, PETG and ABS, I think I could print on the surface of a 10 inch tank of oil with more success than the textured sheet. Plastic doesn’t stick to it. I’ve wiped it with isopopyl, I’ve washed it with dawn…it’s a bad print surface and I want my money back.
PETG on textured sheet from prusa here. Works like a charm, and I don’t even use a gluestick.
Is your sheet perfectly clean? Scrub it with a dish washing brush, dish soap and warm (not hot), and dry it with a lint free towel. Even fingerprints (visible or invisible) is enough to ruin adhesion.