The Circle device works with a majority of mesh network systems, but occasionally they can create issues during the Circle device's set up.
When you're initially setting up the Circle device, you might need to separate the 2.4GHz and 5GHz bands and power down your mesh networks satellite units, while leaving the main gateway up. Your gateway unit is the one that is connected to your home's modem via an ethernet cord. Satellite units might connect to it via ethernet, or more likely, via a mesh wireless network. Pair your Circle device to the 2.4GHz network, and then plug it in via ethernet. Afterwards, you can bring your satellite units back up. Just make sure to set them as "Unmanaged" if they appear in the Circle app's device list.
If you're concerned about compatibility between your mesh network and the Circle device, check out our list of incompatible routers, or reach out to support using the contact info at the bottom of this page.
For more about advanced network setups and the Circle device, check out this help article.