Op-z App wont launch on my new Phone

Hi there folks, since I’ve changed my phone from a S8 to an S21 5G, the OPZ app won’t launch on my new device, it open, go to the white screen, than crash everytime, I once got to the Bluetooth pairing screen but it crashed right after… anyone have any solution to this ? ofc I tried to reinstall the app multiple times and it didn’t work