Captcha provider certificate error

[Tripredacus]

The captcha provider on the site/forum's registration form is showing a certificate error for some users. The result is that the captcha does not appear on the form so the registration process cannot complete.

Failed to load resource: net::ERR_CERT_COMMON_NAME_INVALID for cap.js (remotely hosted by keycaptcha.com)

Reported to me by a user but they did not provide system configuration. I verified using SRWare Iron 135.0.6850.0 on Windows 10 21H2.

[Karla Sleutel]

Tripredacus, the user could be from a troublesome location, Nigeria, Russia, Uganda, whatever. I tried to make an account, they simply asked me for a word.

I didn't even have to solve captchas. Though, there is an error in the word colour, a misspelling.

[Tripredacus]

Color is spelled correctly, at least in US English it is that way. The sentence has a grammar error but that's probably even better to deter bots, idk. 

Something is supposed to appear next to Security Check and it doesn't, not even for me. I suppose it could appear if you modify your browser settings to allow such content to appear but that shouldn't be a requirement, the forum's registration should work on stock (and "secure") browser settings. 

[Karla Sleutel]

Colour is spelt as colour on all countries, except one. You wrote this forum is based in Europe, France to be precise, as we all know, and I always read what you write with attention.

No one spells "color" in Europe, apart from (maybe, just my guess) some old people, like 90 or more, from the period of US/USSR occupation of Europe in 1945.

But they can't join the forum, obviously, and any other generations of Europeans had learnt British English at school, like the rest of the World.

"I mentioned but MSFN is based in Europe"

https://msfn.org/board/topic/184809-alternative-location-for-discussing-msfns-status-if-msfn-is-offline/page/6/#findComment-1280862