Update, CGNat was enabled by my ISP. I requested this to be disabled and Dynamic IP be enabled. This fixed my issue and I am now able to reconnect to my Deco using the VPN.

@David-TP In response to your questions " is there another ISP router in front of Deco, like your ISP wireless router?" Yes, my NBN NTU sits in front of mt deco. It is setup like this (Internet -->>...

@David-TP Since upgrading to X50/X55_V1_1.5.0 I can no longer use Open VPN to connect to my internal network. After doing some troubleshooting I noticed that the Internet connection IP address...

Thanks, that helped.

Has anyone come across this enhanced client identification update with the Deco X55? When managing the network via the deco app I keep on getting this pop-up which I have not enabled. I also noticed...