Answered: Rebex License Key issue for Websocket Connections

Your Rebex WebSocket subscription expired in December 2023. That means your license is valid for Rebex WebSocket v7.0.8720 or earlier, and you can use those releases without any limitations.

To get a suitable key for these versions, log into our website and get your key.

However, your license does not cover Rebex WebSocket v7.0.8755 and later. To use these recent versions, you would have to purchase a license for another year.
Alternatively, if you would just like to give them a try, use this 30-day trial key:

Rebex.Licensing.Key = "==ACFj30fwYDYRTq9Yppx4QDbe1NdpdeH0fHwDMbWKhY5E==";