Unfortunately RE-EQ didn't work for me either (aurora store didn't work for me for non-free apps). But if you happen to only use TIDAL, you can try out CAPTUNE which was developed by sennheiser. It is a free player which has native support for tidal and it has a good EQ. Please be aware that captune EQ will apply the necessary negative pre-amplification so you might need to raise the volume after EQ. I'm not aware of any system wide EQ other than RE:EQ.