If your license key is expiring repeatedly then please follow the steps below to fix this issue:
• At first, install the attached patch plugin on the sites that are having this issue.
• Deactivate the license key.
• Deactivate/reactivate the “Share logins” plugin.
• Now activate the license key.
This method will solve this problem. This is a known issue for the older version of the plugin and we already fixed it. You can update to the latest version to have better performance.