I neither see any options in the B&O app to change the sound quality to FLAC on my B&O speaker, nor do I see what sound quality it uses

Does the built-in Deezer app in the B&O speaker use FLAC by default, or do I need to turn it on somewhere? Would also be interested to know where I can see what sound quality is being used.

Btw, I do have a Deezer Premium subscription.