My website show DNS_PROBE_FINISHED_NXDOMAIN

Hello, our website has users visiting Germany: DNS PROBE FINISHED NXDOMAIN, what is the reason?
Since switching the DNS of cloudflare, our website has used payone payment method to perform cron, but payone’s order status has not been automatically changed after payment. Is it related to firewall or IP change restriction? Please look at it, thank you!
Website: gensace.de

It works for me from DE. Where did you see the NXDOMAIN error?

About the cron: Did you check the firewall logs?

Other crons work, but payone payment doesn’t work. Where can I see the firewall logs?

Are you talking about cloudflare firewall logs?