If you are looking for support for a registered version of Sonic Studio software, you can visit the Sonic Studio Support Page for technical assistance.

Sonic Studio does provide an "All Access" subscription model for some of its products, which allows users to access updates, but this is a paid model rather than a completely free license, with some products listed with specific, premium pricing (as shown in this product comparison).

is a professional mastering tool for DSD audio.The two are unrelated except for sharing a similar name. Are there free alternatives?

The edited DSD files are loaded into nexStage.