Have you tried using an extender 'not' from Snap?

I have never had a problem using AVPro, Metra, or even J-Tech extenders. The last problems I did have, was years ago using a few Snap extenders. No problems since I stop using their stuff.

I did have a defective Yamaha receiver that worked but couldn't get a signal thru a 2nd device to display. Swapped the Yammy and all was fine. Seems Yamaha has been using low-binned parts since the shortages. Seeing a lot of issues popup with their receivers these days. Add to the fact they supply inventory to big boxes first, leaving nothing left for the CI channel and I'm just about done recommending Yamaha anymore.