I am currently subscribed to 360 plus and have tried to upgrade to 360 pro but i keep getting an error message.
To make sure that it is not a browser issue then try another browser that you have not used before and with no extensions and all cookies accepted (my suggestions for alternative browsers would be e.g. Firefox, Chrome, Vivaldi browser and Opera browser ,depending on what you do not usually use)
Also then you can try using another device type e.g. a mobile device instead of a computer or the other way around.
The suggested browsers are what I expect will work if having never been installed before on the computer and then used as is with no extensions and all cookies accepted.
Else please contact N.I. Account Support or N.I. Purchase Support
In case that you need guidance contacting support : Please read : how to get support !
