Unable to add new page/post in wordpress

Hello,

i have added aabhatutors.com at cloudflare few days before, the all setting seems works fine but one very critcal issue facing with sub domain related to this domain https://blog.aabhatutors.com, using wordpress amdin and when trying to add any new page/post the page get blank… can you suggest is there anything need to change for sub-domain https://blog.aabhatutors.com

Thanks

Make sure you’ve done this step.