The most common fix for this is:

1. Log into your online account
2. In the Syntorial section, click "Authorizations"
3. De-Authorize all CPUs and iPads
4. Try authorizing Syntorial again

If that doesn't work, reach out to us via the Contact Us at the top of this page, and include the following:

• Mac/Windows:
  • Open Finder
  • Go into the Documents/Syntorial folder
  • Grab the "log.txt" file
• iPad
  • Open the Files app
  • Select "On My iPad" on the left side of the screen
  • Go into the "Syntorial" or "Syntorial 2" folder (depending on which version you're using)
  • Go into the "Syntorial" folder
  • Grab the "log" file there