Cannot use licence “all licenses are currently engaged” with mystery ISP!

I am not able to use my Corona license. I have the latest version of Corona for 3Ds Max.

Corona stopped working in the middle of a project saying that “all licenses for this product are currently engaged”. I rebooted both my laptop and my PC (the only computers with Corona installed and received the same error message (neither was running Max at the same time).

The license server says Corona Universal is “in use” when it is not even installed (at least it is not on any of my listed apps).

It says: In Use Online Evergreen∞ 192.168.50.120. I checked my IP address. It is 115.189.133.17. Could someone have “stolen” my license?

This is being handled by the licensing team through a support ticket. Please note that we are usually unable to solve license-related issues over the forum.
Thank you for understanding.