When I try open my website I often have the either of the two errors as in the pictures:
I have tried accessing this site from several different computers and this error appears most often when I try to access the website the first time after opening a browser. When refreshing several times or trying again later it often suddenly works.
I use 000webhost, where I have asked for help, but there seems nothing wrong. When I turn Cloudflare off, the website seems to work fine.
The website: https://www.ferienwohnung-schorfheide.de