Hi @Mickyboylondon,  I have found this workaround in a different thread here in community - HERE

Access a different app store and download an older version of the Deezer app. Aptoide TV is a recommended app store for this purpose. Once you are there, locate the Deezer app and click on "Other Versions." I personally used the July 28th version, and the issue was resolved after the update.

It is a old tip, so not sure if still works. 

In case you continue with same issue, please try to record a video and share it here. 

App reports incorrect android.media.action.CLOSE_AUDIO_EFFECT_CONTROL_SESSION instead of android.media.action.OPEN_AUDIO_EFFECT_CONTROL_SESSION, resulting in the equalization not being applied

Hi @Enfurno, thank you so much for sharing this information with us.
I've already shared your information with our developers.
We truly appreciate it.