Today we had a major downtime because the new TLS certificate was not upgraded properly. This caused most of the versions of SKM Client API (aka SKGL Extension) not being able to validate license keys.
I’m very sorry for all the problems that this caused you. Downtimes occur because of various issues; at SKM we are constantly working on making sure to reduce them and their impact.
I’my happy to tell that this issue is now fixed!