Looked at the gerbers. Can't see any reason this wouldn't work.

I'm not familiar with AMS1117-3V3. Quick search turned up a datasheet which says it wants a 22uF tantalum capacitor for stability (on page 4 under "Stability"). PCB layout looks like 4 ceramic capacitors. Maybe this is one of the types of LDOs which needs capacitor ESR between a certain range for stability? If all else has failed, I'd remove those 4 ceramic capacitors and try 1 tantalum.

Or maybe try a LM1117 chip instead?