I have connected spotify via AVR Denon x2500h and using iphone ( just updated iOS 12.4), Spotify app ver. 188.8.131.521 (just updated). It worked well to remotely control volume approx. 2 weeks ago. nothing has been changed, just stopped working. I have "Devices Lock Screen function" ON. Any Ideas I could try to get this fixed?
Thanks a lot, it's getting annoying to control volume and songs by 2 applications (spotify for song + denon app for volume)