| Error Message | Likely Cause | Solution | |---------------|--------------|----------| | “Unable to connect to activation server” | Firewall / proxy block | Temporarily disable antivirus/firewall, or use a different network. | | “License key mismatch” | Wrong edition or product | Download correct edition from your purchase link. | | “Activation count exceeded” | Used on more machines than allowed | Deactivate from previous PC or buy additional license. | | “Key not found in database” | Typo or fraudulent key | Double‑check hyphens and characters; if bought from 3rd party, verify authenticity. |
: Buy the software online via the official "Buy Now" links. Upon confirmation, the activation key is sent immediately to your registered email address. stellar converter for ost activation key verified
Licensed versions typically support converting multiple large OST files simultaneously. | Error Message | Likely Cause | Solution
$99 to $299 depending on the edition.