I have a perpetual/permanent ArcGIS desktop licence under the SCGIS conservation program which worked for few months before it recently stopped working. When I try to launch it I get the message which says 'my license is in need of a repair operation, access the ArcGIS administrator to repair your licences'. All the extensions show they are still up to date and I don't see an option of repairing it on the administrator though I unsuccessfully did try to repair it through uninstall> repair. While I was on the ArcGIS administrator I could see that the authorization status of the desktop is "untrusted" and not 'yes' like the extensions. My customer number is 575586.
Thanks for helping.