I don’t know how to alert JetBrains about this problem. I won’t discuss it publicly, and I already opened an issue for that (CPRTINF-5521, private to JB and me), but it’s super easy to use paid plugins and IDEs without paid licenses.
I opened CPRTINF-5521 two months ago, and still zero feedback. This led me to add additional protections to my plugins, but I wonder why JetBrains seems to remain silent on this issue. I understand that this is certainly a critical issue, but you could at least give your opinion when plugin developers alert you to it.
(feel free to delete this thread, I just want to alert you about this issue, and get a minimal feedback)