Hi there!

Sorry to hear this is happening. I saw in our backend that the support team replied to your request, please check your inbox. If you have any other specific request, feel free to respond via email. Your ticket will be re-opened. For your reference, your ticket number is 1045744.

For visibility here, who may encounter a similar issue in the community:

The most common reason we see users unable to access Professional features is that the file they’re working in is not located in the team they upgraded — the team you originally upgraded.

If this is the case you can Move files and projects to the team you upgraded to access those features there.

You can use the team picker dropdown on the left side of the file browser to navigate to the “Templates” team:

Hope this clarifies!