[Plugin: WP Encrypt] Challenge self check failed

Hello,

I started using WP Encrypt recently. Little initial bug, quickly resolved by the author, then it worked fine.

Today, I try to apply it onto another website: 1) install plug-in, 2) activate, 3) enter settings, 4) register… so far, so good. Then when I want to generate my certificate I get an ugly “Challenge self check failed for domain https://www.businessangels.ch”. Tried several times, always the same message.

Any idea why it may be so?

Best regards, Stéphane