@Emil unfortunatelly not much better. I tried now with Nexus 5x, and to tell you the truth, things are getting even worse:

Yesterday I set up my old phone: Nexus 5 and my Flic account and my 4 Flics. I set the turquoise to call the gate's number on click and call my wife on double-click. Today I connected the the turquoise Flic to my wife's Meizu phone (it worked after a few restarts of the app and clear data). Note: She uses a different Flic account! I set up that Click calls a phone number (with Hebrew characters in the contact's name in her phone's contact list), Double Click calls ME! Just now I logged in to MY Flic account (the one I used previously in my old Nexus 5) from my new phone (Nexus 5X). I do see my 4 Flics, and there's an icon on each of them teling me that they're locked (makes sense, 3 of them are locked to my old phone, and the turquoise is locked to both to my old phone and my wife's phone) I pressed the flic for 7 seconds and clicked DOWNLOAD (doesn't make sense, the Try again I had in the other phone was more logical to me) BUT when I enter the configuration of the turquoise Flic I was shocked! I saw that Double Click's action is to call ME! This is an enormous BUG, as in all places it was stated that the actions are saved in the phone/account and not "in the flic". How come that when I logged in with my flic account I get the settings of my wife's flic account/phone???? I also saw that the Click action has ???????????? in the name instead of the Hebrew characters....

Look, I am a programmer myself, and I like to help, but I don't feel I am getting much for my money here. The reaction time is way to slow, and doesn't address the problems. The bugs I just posted now... they are so huge, I can't possibly imagine how can it be that you never tried the 1 flic 2 phones, 1 flic 2 accounts scenarios!!!! Or if you never tried them then at least don't write in the forum that it works!

I am seriously considering returning my 4 flics, I paid $110 for them and the time I am investing in debugging and waiting for days to get a response doesn't worth the money. For $25 I can get a Raspberry PI that works and knows a bit more than a flic....