Thank you for your detailed report. We have checked our license server, and it is fully operational with no other customers currently reporting connection issues. The behaviour you describe, temporary disconnections that resolve after a few minutes, indicates an intermittent connection problem between your machine and our remote server, rather than a licensing or registration issue.
Please note that our products perform a lightweight verification only when cTrader first starts. Once verified, there are no continuous license checks while the product is running. If your system temporarily loses the ability to reach our server during startup, you may see this message, but the product will automatically reconnect once access is restored.
Since this issue is isolated to your location (South Korea), it is most likely caused by a local firewall, antivirus filter, VPN, or ISP routing problem. We recommend the following steps to help identify the cause:
Temporarily disable your antivirus or firewall and test again.
If you are using a VPN or proxy, disable it and retry.
Run a ping or tracert test to our server domain to check for connection drops.
Ensure your Windows date and time are correct.
Try connecting from a different network (for example, mobile hotspot).
You can also use this page to test your connection to our servers:
https://help.clickalgo.com/account/connection-issues/
Once you’ve completed these steps, please let us know the results so we can assist further.