It doesn’t seem like changing the BPM changes the delay time for the digital delay (In sync mode). Stereo delay works fine. Afaict, Delay time a fraction of 120 BPM on digital delay, but a fraction of the global BPM on stereo delay.
I could happily produce a preset exhibiting this behavior: Just need arp, oscilator, amp env and digital delay. When I change the BPM, the appreciator changes tempo but delay does not. Again, stereo delay works properly.
Thank you! (PS: Mela sounds amazing and is easy to program, you probably saved me thousands of dollars on a hardware synth!)