Thea Render for Sketchup - Old License

Hello,

I'm a licensed user of Thea render for Sketchup. 

I've re-installed from scratch Sketchup 2020 and Thea for Sketchup. 

I've registered myself on Altair portal, but it seems that there no license about Thea for Sketchup to activate.

I've only the .dat file of my licensed copy that I've used until last week. 

What do I have to do for activate my Thea software?

Help me please.

Pier57