Ok, so to start, I think guest mode is a neat feature and I see why you added it. But it's really inconvenient to always have enabled. When observing, I have my S50 set up in my back yard, connected to my wifi. I use an ipad to control observations from my house. But occasionally I'll need to go outside and re-position the telescope or swap an external battery pack. When I do, I like to use my phone to refocus and re-target an object. But now, ever since the last update, if I forget to release control on the ipad beforehand, I have to trudge inside, give control to my phone, then trudge back outside to finish adjusting the scope.
So please, ZWO, just give us a toggle switch to go back to the old mode where any connected device can control the telescope.