This error appeared yesterday. I have been with Cloudflare for under a year, my host is IONOS same time.
IONOS said ‘We are able to point the domain to CloudFlares Name Servers. In order to connect back domain to IONOS for web hosting, point the domain to this IP address 188.8.131.52 from CloudFlares end.’
This was however already inputed, when I told IONOS this they said I had to change the nameservers to IONOS ones, alas I do not know how to do that.
Thank you for your time