I found this solution very helpful when I read it on another forum. So I will share it here.
When the chime didn’t connect, the app said to change the channel on the router to channel 1. After I changed it to to channel 1 it still didn’t connect no matter how many times I tried.
But when I researched the issue, someone wrote that they set the chimes on different frequencies in the factory, different than the channel 1 that is recommended in the app. And the problem is that you will never be able to guess which channel it works on, unless you go through each of the 23 channels on your router, which is very labourious.
So the solution is to download a free Wifi Analyzer. Doesn’t matter which on. I downloaded a microsoft Wifi Analyzer. Then you run the test and it finds all the devices that send out a signal and which channel they are doing it on. I discovered that my chime is boradcasting on channel 11. So I changed the 2.4Ghz frequency on the router to 11 and bam, suddenly the chime and router were able to talk to each other.
Once you know the solution it’s very simple, Good luck!