The annual Maintenance & Support Plan (MSP) is renewable one year from date of purchase (or on your pre-established renewal date) and each year thereafter. How to renew depends on the type of license you own and how you want to pay:
Individual, Node-Locked, & Analysis RunTime licenses
Go to Maintenance & Support Plan Renewal in the ExtendSim Store to pay by credit card. Choose the package you are renewing  and include its ExtendSim Activation Key plus the contact information for the end user.
If you prefer to pay via check or ACH/EFT, check the MSP Annual Renewal Fee chart to determine the cost and part number for your renewal. Submit your PO to sales@ExtendSim.com. Be sure to include the Activation Key for the product you are renewing.
Floating & Cloud licenses
Contact Imagine That Inc. for renewal fees and payment options.