Hi whalenav —
Thanks for reaching out and welcome to the eero community!
We do not recommend connecting a range extender to your eero network. Doing so could degrade overall throughput and interfere with our mesh routing optimization.
If you have any other questions or would like to speak with our team about setting up your eero network, feel free to give us a call at 1-877-659-2347 or email us at firstname.lastname@example.org.