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For the Paid customer with still valid and software update and upgrade (SUS) subscription entitlement (have yet expired), and without E-SPIN local onsite maintenance support entitlement, you can forward all your product support to [email protected] Please make sure you have still active license ID and all the detail, when contact manufacturer support and technical inquiry

Different product manufacturer/developer have their own policy. For Principal (Hex Rays/manufacturer/developer) is now only willing to accept one go for 3 years the most, since the long run cost usually will be goes up. So, if you intent to load 5 or 4 years up front Principal also cannot accept. The only way to do 4