One commenter always needs approval though previously approved

Check your moderation list at Settings > Discussion.

If any part of their name, email, website, or IP address matches something in there, they’ll be held for approval every time.

Keep in mind that the list matches parts of any word. So, if you’re holding anything that mentions “roo,” it will also hold “classroom” or “broom.”

Thanks James. I did just check but my moderation list is empty.

Make sure the empty isn’t just a space either, weirdly enough that would mean anything with a space is held for moderation. ??

Are you running any anti-spam plugins?

No space, unfortunately. Either in the moderation settings nor in her email. It’s only she who is affected, oddly enough.

And I only run Akismet, I think, as anti spam. I once did find one of her comments in spam and marked it as not spam. They’ve never gone into spam since, just held for modération.

I even made her a subscriber user. Nothing has helped.

E

That’s very odd.

I believe we’ve ruled out all WordPress causes.

Have you contacted Akismet’s support about this? https://akismet.com/support/

I haven’t thought to contact them, but will do so. Thanks.

I had one thing that I wondered about. The commenter’s email address has a dot in the middle: [email protected]
Would this cause any problem?

Only if the comment moderation list has a lone . in it as well.

Not the case. Thanks.

I sent a support request with my key, but I wonder how they will respond, unless that key gives them access to my email account? I didn’t have to supply one.

I’ll report back if I hear from them. Thanks again, James.

Okay, they responded, incredibly quickly, actually.
“I looked in our logs and Akismet hasn’t treated any of their comments as spam”

There is this in the Disallowed Comments box, 110.142.81.49 but description of that box notes that the comment will be put in the trash. The comments don’t get put in the trash, they get sent for moderation. Could that be it?

E

No, Disallowed Comments wouldn’t affect this.

Is your Comment Moderation List at Settings > Discussion empty?

It’s absolutely empty.

I chose the option to show the number of approved comments next to the name of each commenter. Most show a predictable (and increasing) number as I go up the list from earlier comments to their latest (including my own). This person’s goes from 2 to 1 to 1 again…

However, she has just responded to a comment I made, and that response has gone through with no issue. I’ll keep an eye on it.

Cheers and goodnight