Device connectivity issues with Wifi Range Extender

Hoping someone can help me debug this or point me in the right direction.

So, I currently use a WiFi Extender to spread my WiFi signal a bit. The extender is a Xiaomi Mi WiFi Repeater 2 and is set to “Roaming” mode which essentially broadcasts the same SSID as the original source.

I have noticed that if any of my devices (LifX bulbs, Envoy smart meter, etc.) connect to the extender then Home Assistant can no longer connect to them. I can still ping the devices outside of HA so they seem to be correctly visible on the base network. For e.g. I can connect to the envoy endpoint using its IP address and can control the LifX bulb using the LifX app.

I am guessing this has something to do with the discovery maybe? Any ideas on what I could try to track this down and also potentially fix the issue? What network protocols should I try and troubleshoot?

P.S: I am hoping to switch to a UniFi solution for WiFi in the long term allowing me to get rid of the repeater. That can’t happen soon though as I want to get that done as part of a larger rewiring of the house.

Do it, I did and couldn’t be happier.

Well maybe if my lotto ticket comes in…