yugen2017

Thank you Chrystl.
Yes, it was 3.2.2.
I have uninstalled it and installed 3.1.4, and I don’t see the problem now.

resolved

Thank you, Bruce. Someone else already took care of this. Have a nice day!

I should be able to see the site in question, but somehow, I don’t.
https://jetpack.com/support/disconnect-jetpack-sites/

If you search for the phrase “参加申し込みはこちらから。” on the page (copy & paste), you see that it is not underlined.
Other parts are underlined because I specified it in CSS.

OK, I figured it out. The cause was not Contact Form 7.

Thank you, Miyoshi-san.
I understand that this method can also be used to hide an email address.