[Urgo]

Looks like this no longer is included in the FAQ, but here is an archived copy directly on mirc's website about the lifetime license going away. It looks like the lifetime ones were downgraded into 10 year ones. It looks like at least when this FAQ was live you could email him and ask for a new one for free once it did expire so that was nice, but unsure if that is still being honored as the FAQ has now been removed [2]. He did try to make you feel bad about emailing though asking.

Full text copied from [1] for ease of reading

>> Question: I have an old registration that is not working, can you help? Answer: When I originally offered a lifetime license in 1995, it seemed like a kind and fair thing to do. However, I did not expect that I would still be working on mIRC twenty-five years later. The lifetime license means that I am still supporting and providing updates to every user that has ever registered. This has become gradually more difficult and has reached the point where, sadly, it is just no longer possible. If your registration is over ten years old, if you can, please consider registering again. Your continued support for mIRC would be really appreciated. If you register again, you will receive an updated registration automatically. If you cannot afford to register again, or would rather not, that's okay, just email me. However, please be aware that it will take time for me to reply.

[1] https://web.archive.org/web/20201001000000*/https://www.mirc...

[2] https://www.mirc.com/pfaq.html#registration