agree with you and trying to find a solution.
There are a lot of things related to repeater. When there is a problems need a lot of details to investigate.
- 2.4G channel 12, 13, 14, only some coutries support these. Generally the problems is cannot find the ssid.
- 5G DFS channel, DFS has more troubles, has to detect radio signal which could be slow
- 5G Band 4 channels. Europe regulation said these channle is usable with 25mWatt but generally these channels are not usable on routers
- Channel bandwidth. H20, H40, VHT80, VTH160. Use narrow band is more stable
- wifi signal strength. When wifi signal is weak, generally AP will kick you out
- Multiple BSSID auto switch
- portal does not pop up: forums has some discussion. Most of the issues are related to DNS and VPN.
- WPA3 etc. e.g a recently fixed bug to connect to IOS hotspot
- Weird things e.g. Slate AX1800 not broadcasting 5Ghz WiFi - #10 by alzhao which is bug of IOS