VSM 1.0.4 Update

My annual subscription has just expired. From where can I purchase the reduced rate renewal ? Tech Supplies offer a full version purchase on their web site but I can't see any reference to a renewal cost.

Need some guidance here please
Thanks Technical.

Downloaded the new version 1.0.4 and the license key clicked in okay.
However, when opening VSM a Labcenter dialogue advises my customer key for Proteus Lite has expired and asks if online renewal is required (see top illustration in attachment). Responding yes brings up a Labcenter secure ordering web site (see lower illustration in attachment). Using the browser back button as they suggest drops the link out completely.

Is this something under RevEd control or is it a Labcenter issue?