Premium templates and free plan

I need help, please: I bought a licence for a premium template but I’m still a free plan client.
I had one active project, and the template created a new project.
My problem is: this template was for a 3rd work (after turn to a premium plan), and I can’t work on my 2nd project because it seems to be dedicated to this template project.
What can I do? If I remove the template to work on my priority project, will I be able to download it again?
Thanks for your help!