Last year, I tried to upgrade my subscription from FMS Data to Ultimate.
It was impossible to get a dialog to achhieve ths and after many tries, I finnaly gave up.
This year I decided to try again. It is a little better, as I can start a dialog:
Want to upgrade your account yes
Upgrade to Ultimate yearly
Use older way of payment yes
Then, nothing happens. Stays quite indefinitely. Subscription not upgraded.
Is somebody going to help this time?
I am sorry you are having a problem upgrading. Does switching your default browser say to Chrome help? Do you have access to another computer , iPad etc on which you could make the upgrade?