The ExtendSim Maintenance Plan for your single user license must be renewed annually to maintain your access to ExtendSim Technical Support and to receive upgrades.
The ExtendSim Serial Number of the license you are renewing MUST be provided in the "ExtendSim Serial Number" box above. Please also include end user name and email address.
If you own multiple ExtendSim licenses, each license's renewal must be individually Added to Cart.
Note: If your Maintenance is more than 30 days overdue, please see our Policy on late or lapsed Maintenance.