I have a 2019 Mazda CX5 and use apple Carplay with no issue until recently

The issue is my son came home to visit and he used my car for a couple of weeks and he also has a Iphone

He went back homea nd I got my car. The issue is Carplay with not work with my Iphone However It does work with my wife iphone

We travelded today , she plus her phone carplay work

Tried my phone, and carplay is grayed out
It work 3 weeks ago

Any idea what is going on

I made no changes to my iphone

Thanks

tom