Unable to Activate License Unable to send HTTP POST request

I have been using Maker Edition for my home automation for the last couple of years and all has been ok until I recently changed provider to Starlink I am now getting a constant LeasedActivationStrategy - Unable to Activate error. i have really good and fast internet and no problem connecting to anywhere on the internet so it is not my internet that is a problem.
How do I resolve this issue? is it something to do with the fact that they use CGNAT?