Orakel

I have the same.

Take a look at this:
https://www.lekaro.no/travel/2011-south-american-adventure-ecuador-brazil/

The HTML actually set in the post

<a href="https://www.lekaro.no/wp-content/uploads/2011/01/27519_131927523488439_8977_n.jpg"><img src="https://www.lekaro.no/wp-content/uploads/2011/01/27519_131927523488439_8977_n.jpg" alt="Rosa Bussarna logo" title="Rosa Bussarna logo" width="200" height="200" class="alignleft size-full wp-image-622" /></a>It's done, or at least is has started !

Today I got the news from work that I'll be able to do have my vacation as I asked for and I didn't wast a second booking my next adventure. Well I wasted a few minutes cause I had forgotten my login to the <a href="https://www.rosabussarna.com" target="_blank">Pink Caravan</a> website.

I see the same error in the XML sitemap admin page.

But when I click the View result I get a page that looks like this:

Ping Test

Trying to ping: https://www.bing.com/webmaster/ping.aspx?siteMap=http%3A%2F%2Fwww.lekaro.no%2Fsitemap.xml.gz. The sections below should give you an idea whats going on.
Errors, Warnings, Notices:
WP_DEBUG was set to false somewhere before. You might not see all debug information until you remove this declaration!
Result (text only):
Vielen Dank f??r das Senden Ihrer Site??bersicht.
Result (HTML):
Vielen Dank f??r das Senden Ihrer Site??bersicht.

What this tells me is that the submit actually work.
I’m not sure why I get a response in german, but that might be why the plugin isn’t able to parse the response properly and thus gives an error even if it seems everything is ok.