We ran into this issue with Zero Phishing (ZP) licensing for the ATC course environments. After investigating it turns out that upon the release of R81.20 GA, no license/contract was actually required to use the new Zero Phishing feature. This was not well communicated in my opinion and resulted in many Sandblast licenses being generated with no ZP licenses (including ATC ones which is how I found out about it). This was changed in R81.20 Jumbo HFA 26 and later, which suddenly started enforcing the need for a ZP license if you tried to use it (or were already using it via Custom or Autonomous mode). To Check Point's credit this change was clearly documented in the Jumbo HFA documentation, but still caught many customers by surprise.
Gaia 4.18 (R82) Immersion Tips, Tricks, & Best Practices
Self-Guided Video Series Coming Soon