I Add my website in Cloud Flare but its showing issues

Hello Cloudflare Community i added my website on cloudflare but its showing the 501 issues and some time showing the 404 issue please help me to fix the issue i have wordPress Health Care Clinic Website.

Welcome to the Cloudflare Community. :logodrop:

Did you click :point_up_2: that to read the Tutorial?

Are you seeing that status only when requesting nonexistent URLs?