Hi eclass
Our premium add-ons keep working even you don't update them. But we always recommend to update them cause old versions can contein bugs and because of security reasons.
If you don't see the option to update the plugins, please, follow this documentation to activate your license: https://forum.stockmanagementlabs.com/d/1048-how-to-activate-a-license-of-a-premium-add-on
Also, we give support to all our users, just we were on weekend and that's why we are answering you know 🙂 In addition, we have a premium support platform where you can open tickets to ask your doubts: https://stockmanagementlabs.ticksy.com/
Best Regards,
Andrea.