@SteveMann Well, you certainly didn't give us much to go on... Are these standalone 610's, do you have a controller? How do you know there are issues..and doesn't that answer your question?

@chrisfromthelc ^^ have you tried a powerdown/powerup reset of the entire system? If still a no-go with the iPad, then yes, revert to older firmware pending more info from TPlink.

@wp-fred ^^ That is the reason the OP wants to run GRE over the IPSEC. TPlink routers support an IGMP proxy for WAN ports, but I don't know if that extends to VPN endpoints.

@Hank21 Did you have any ACL settings? -- ONLY BETWEEN SSID VLAN/SUBNETS. NOTHING ON VLAN1. COMMUNICATION IS BETWEEN DEVICE AND CONTROLLER RIGHT? Please check whether there is a Firewall or the...

@KMPLSV As long as you don't tick the 'Guest Network' box for the TPlink AP/SSID, but map the SSID to the correct VLAN, it should behave as before.

@KMPLSV You can't tick the 'Guest' network box if you want the guests to have access to local resources, as guest mode prevents them from interacting with any private IP. Instead, you'll have to...