Oul drain plug vs cvt oil plug locations and is it possible to confuse

Went into a new shop for routine oil change. Came out with check engine light, turns out they overfilled oil but messed around under trying to figure that out. They drained to appropriate levels, I left and now it seems the transmission is shaky and has slippage as well as slow acceleration. I'vebeen reading a bit about this and others have had this mistake happen to them.. I would like an image of the undercarriage to see the location of both plugs and the remedy