Deezer stops playing in car when the screen is locked

I’ve been playing my downloaded music from Deezer in my car with no problems until about 2 Months ago, now when the screen locks the music stops playing and I have to go into settings and turn the screen lock off completely.

I’ve tried asking Deezer but I’ve got nowhere, I’ve recently got a new iPhone 11 and reinstalled my apps, I’ve tried going into the Deezer settings and unchecking the background app refresh, my iPhone is connected by USB to my Mini. I have the latest updates too both Apple and Deezer.

please can someone help, it’s so annoying!