You have not set the 2 allocated Cloudflare nameservers at your domain registrar, you have instead just added them to your DNS as NS records. You need to replace the 2 cherry-hosting.nl nameservers with the Cloudflare ones… https://cf.sjr.org.uk/tools/check?93c3013272ea409faf26f56014e56cf2#whois
I emailed the webhosting company, turns out they set the nameservers on the wrong hosting package. So that was the issue after all. Thanks for replying anyways!