No, a perpetual license will not expire over time. ASDIP Structural Software regularly releases new versions of our products to add new features and comply with new code revisions. At the time of a version release you will decide if you want to buy a license upgrade, otherwise you can continue using your existing software version.
If your Maintenance & Support Plan is active, then all updates will be free of charge.
If you purchase an annual subscription then the software will stop working after one year, unless you renew your subscription.
Since your computer will no longer be accessible you simply send an email to our support team, and we will deactivate your software license in our authentication server, so that you can install the software license in another computer without any problem. Please note that this is only possible if your Maintenance & Support Plan is active.