How do I activate my Stinger license?
Open Stinger, go to Stinger › License…, paste your key from your purchase email, and press Activate. Each key works on two Macs.
Where do I find my license key?
Your license key is in your purchase email. Copy it from there and paste it into the License window in Stinger.
Can I use one license on multiple Macs?
Yes. Each key works on two Macs. To move to a new Mac, open Stinger › License… on the old one and press Deactivate this Mac, then activate on the new one.
What does 'activation limit reached' mean?
One of your earlier Macs is still holding a license slot. Deactivate it using the manage link in your purchase email, then activate on your current Mac.
How do I deactivate Stinger on a Mac I'm no longer using?
Open Stinger › License… and press Deactivate this Mac. You can also use the manage link in your purchase email to deactivate remotely.
Updated August 28, 2026