Problems redirecting from one domain to another

Hi John
Thanks for a great plugin, which I love using.
I have an issue right now with a 301 redirect from one domain to another.I have searched for a similar issue but can’t find one.

I have moved a post from the site on which your plugin is active, and see the following confirmation:

Check redirect for: https://thegapdecaders.com/visit-madrid
Expected: 301 to https://24hourcityguides.com/madrid-in-one-day/
Found: 301 to https://24hourcityguides.com/madrid-in-one-day/

But when I type the original URL into my browser (Chrome) i still get taken to the original post. This is what the actual redirect looks like

https://snipboard.io/Kh7g5I.jpg

I have tried clearing both browser and site cache. Please can you help?

Thank you

The page I need help with: [log in to see the link]