Oh, the fun... After managing to sync my first two devices using the manual patching of a button into the web ui, I wanted to add a third device. That does get the synchronize combobox and button, but trying to add this third device to the other two does result in two devices being unsynced and the one staying in the synchronized group. So I added a forth device and synced that with the third (using the button trick again, as the only option I get in this setup is to merge with the existing sync group). Now I have two groups of synchronized devices: My original group and a group with the two new devices. At this point I can merge the two groups. Once that is done I can delete the unnecessary forth device again. Voila, all three devices now sync with each other. Best Regards, Tobias