Hi Waseem,
Again, I’m so sorry for the trouble here. With the exception of our Event Aggregator add-on (which relies on our cloud-based servers for performing import tasks), our plugins do not stop working as a result of expired, deactivated, or absent licensing. If you’ve experienced any downtime recently, this is not related to your licensing issues–I’d suggest opening a new thread with some more details in our Event Tickets Plus support forum so that our team can assist in troubleshooting with you.
I hope that helps! Thanks again, and let us know if you should have any other questions or concerns here! 🙂