Wordpress Wordpress site health works on just one domain

For someone else I have migrated 2 WP websites to Centminmod. I don't have any real WP experience btw...

One is for testing purposes, the other one is live.

The testing version works great and the site health tool give me an all thumbs up.
(Even though it gave me problems before but somehow it all started working without problems)

The live version is not that kind:




My guess is that it has something to do with autoprotect or some Nginx conf but I cannot find anything that works.
Tried the autoprotect.sh tool but that doesn't fix the problem.

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Can someone point me in the right direction?

 

I used option 22 but imported the original WP install settings with an add-on (UpdraftPlus).

And yes, the disable XML-RPC is installed and enabled but that's also the case for the other vhost that runs without issues.
I willdo some further reading regarding your link.

Thanks