I'm having EXACTLY the same problem. I have both the Y and the Cybertruck. The Y was a piece of cake. The CT seems to "recognize" my phone but it won't keep it in memory.
I just received mine and I think it will help but there is no installation instruction. Of course, the cover itself is easy--just hook it over the headrests--but the door panel covers are what I really need and they are confusing. They have three or four clips at the top that, I assume, slip...