I realise I arrive several months late in responding to your plea, but since I could - potentially - finally be of some use here, I decided to post my very first response ever on any kind of forum.

I surmise you are speaking of the symbols to open the circular door before the Anasazi Time Gate. When having clicked all the seven correct symbols, thus lighting up the blue arrows around the door, have you then clicked on the 'sun' in the middle of the doorway?

3 years later and I have the same problem.

I try to click on the symbols but instead of going blue nothing happens....nothing at all. Obviously with none on the symbols reacting, none of the arrows is lighting up and I cant complete the last puzzle.

Anyone?

Same in 2023.

The only thing I can interact with is the center "sun" symbol. But without being able to select ANY of the petroglyphs on the surrounding walls, I can't complete the puzzle.

**Edited** It turns out that the hand to touch the petroglyphs does not become active if you haven't yet seen all of the solution images in game. Keep playing and it should eventually work!