Seems there is something wrong with your DNS server. You can try to change the router's DNS as well as the laptop's DNS to 8.8.8.8 or 8.8.4.4.

@atinfj Hey, I just found an FAQ related to this issue. As now the VPN pool cannot be in the same subnet as the LAN IP of VPN Server, we need to set up specific IP range for LAN IP and VPN IP Pool,...

Did you turn off the firewall and antivirus on the remote host? Sometimes firewall will block VPN packets.

@Dave76 Hey Dave, Did you configure fast roaming, mesh or other advanced features in this picture? Some of these features need to keep running the controller. Try to disable them to test. And what's...

As the picture shows, there is an NAT device in front of ER605. Did you configure port forwarding for ER605 on the NAT device?

@Bebe1980 Hey, EAP110-Outdoor doesn't support fast roaming. Only EAP660HD, EAP620HD, EAP265HD, EAP245 V3, EAP225 V3 and EAP225-Outdoor support fast roaming.