What exactly did you check?
Who are you hosting with?
What specific “problem” are you having?
Some screenshots of your publishing settings along with any error messages would be helpful.
You also might have a look here, and go through all the steps outlined.
https://help.realmacsoftware.com/kb/guide/en/how-to-fix-publishing-issues-Z9eDEW9hUH/Steps/233393