SpectraLayers One 7

I ask for help.
I have Cubase 11 with SpectraLayers One 7 integrated. The question is, how do I upgrade to SpectraLayer Pro 7?
This topic was last year, maybe something has changed and there are good opportunities?
Only one option is to buy the full version of Pro 7 ???

If you click on the SL Pro purchase option, you’ll see the available upgrade paths. SL One isn’t mentioned.