All upgrades to Disk Drill PRO and Enterprise are considered final. It's important to know how our guarantee for recoverable data works. We emphasize the value of previewing the data found after scanning, and explain it in our Terms of Sale
in details. Long story short, we only provide warranty on the files that you can preview correctly in Disk Drill Basic. If you skipped this step, unfortunately, there's no way to guarantee the resulting data recovery.