@DavidRA Make sure that you have updated your APs to its latest FW release - here. The same goeas for the ES205G - here. Then test your connectivity. If that still doesn't work for you, here's a...

@Stregnil When a device will re-connect to another wireless SSID depends on the device itself. For this reason most probably your devices prefer to connect to AXE75 SSIDs nstead of your RE305 SSID....

@Iaconi Check this post - here.

@Shumon17 Wi-Fi 7 is backward compatible with Wi-Fi 5. WPA8631P should be able to work with your new router. WPA8631P v3 even supports Easymesh feature as well.

@RealStaticVoID Use another web browser or incognito / private tab to exclude any browser cache issues. You can reset the router to its factory default settings and check if that helps (press the...

@Romax Is your firmware region (US) ? - that's on the router bottom sticker - details. If that's correct try to downgrade to the previous firmware version and check how it goes. Downgrading the FW is...