When I try to change Creative forum's link into archive.org (because whole forum is taken down permanently), it shows reCAPTCHA all the time when I click save button.
Here is an example:
Additionally, I had similar issue before, without archive.org, but with many links posted in discussion page.
I needed to write the whole response on Google Docs, then short the link, and delete https and spread the link to avoid it being detected (though blocking goo.gl seems to be a good thing, though docs.google.com link not really)
This is the response which couldn't go through:
It was here: https://pcgamingwiki.com/wiki/Topic:Ujr171qd2l17r8i8