How get my content didn't approved on these websites

Found the below websites which allow user to publish content and gives do-follow links as the DA/PA of the website is good so i target them but within 24 hours of content submission they delete my content even i target only 1 hyperlink to my business website why?

pages10(dot)com
canariblogs(dot)com
blogolize(dot)com
total-blog(dot)com

There is no content publishing guideline on these pages, but found other user who are targetting these websites! can anyone give some insight on this

How is your content quality and setup?

I'm guessing it's not very high.