The VertygoSLA license file is installed correctly but VertygoSLA is still complaining that the license is invalid.
A marketplace license is still installed in the JIRA add-on management and is invalid. Even if the Valiantys license is valid, the marketplace license will have the priority.
Remove the marketplace license. Follow these steps :
Go the to add-on administration :
Click the pencil icon to edit the license key
Remove any text inside the 'License key' area and click the update button
The marketplace license is now removed.