I’ve seen, repeatedly, where someone can’t figure out how to do something they want. Frequently the answer is “do you have advanced mode enabled?”
I understand and don’t disagree with the concept, but how it’s implemented seems to result in more questions rather than less!
I don’t know the right answer to raise its visibility slightly - maybe others can suggest. Maybe a “?” icon near where there are advanced mode options that aren’t visible simply reminding the user if they aren’t able to do what they want, advanced mode might open up more possibilities.
At the other end of visibility (perhaps going too far), on pages with advanced options, there could be an advanced tab, or a collapsed advanced section at the bottom of the page, rather than having it completely hidden from view.
EDITED TO ADD:
My original idea for this was an incremental one (within WTH guidelines). But I also agree with this response that long term, there might be a better way to approach the overall concept: