@MrShinigami Do you mean all wireless clients have the connection issue, but the wired clients are working? Can these issued clients obtain a valid IP? Can the guest network work properly if you...

@Kaalz Better to check the front-end router and switch first, confirming the front network is stable can save some time. Check whether these client devices get valid IP addresses and check the...

@Skinet Tried to connect the portal SSID several times, and it will work finally. Or open a web browser and the page will pop up automatically, better to try different web browsers for testing.

@doremifajb Go to Client List, you can check the Status, same to unauthorize the clients here.

@Forna91fi Put the router into a fixed channel and use the CPE as the client to connect for testing. Are you saying the CPE is resetting itself auto? If so, maybe a hardware issue.

@marcelo_nomia Hi, here is the list of all EAPs with Wifi6 supported, but it still needs the clients support wifi6.