Support
Email us. Include macOS version, Apple Silicon chip if known, and whether the issue is Single Clean, Stem Remixer, separator download, or licensing.
Quick links
System requirements
macOS 14.0+ · Apple Silicon · optional Core ML htdemucs separator download (FP32 recommended).
License and trial
Enter your STK1.… token in Settings → License. Trial: 14 days, export locked. After expiry, preview still works.