I ended up moving the entire function out into the material just to be sure, along with the don uv node, however still the same result.
It’s definitely detecting the don node however, as switching out the material with something that doesn’t contain a Don Node, the print screen error stating the node is missing from material pops up. Meaning it’s detecting the node and but just not applying, or it is applying, but the results are not visible, I’ll tinker with my UV’s and see if it’s something to do with that.
Also the Mat instance layer wasn’t disabled when I checked.
Thanks again for your time, Let me know if you think of anything else…