Hello,
I think this is, also to judge from this post Non-working lifetime licenses , the same from the first post in this thread. Anyway it’s better to wait for a reply from SpyShelterCarl about this issue also because I haven’t found anything about old lifetime licenses validity in SpyShelter FAQ SpyShelter FAQ – SpyShelter Help although at the webpage Activating SpyShelter Pro or Ultimate – SpyShelter Help it’s written that the Classic codes are only valid for the Classic software:
If you have a SpyShelter Classic software code, that software is still available and fully functional. Please click the “Classic SpyShelter Apps” section on this help page to download those classic versions of our app so you can use your activation code there. We did not discontinue our Classic software and it still fully functions for paying customers.