I require native content writer for hosting niche and they must also include a image related to article topic which is royalty and copyright free...
How much are you refusing to pay for this work? Check his reputation here before offering to do any work for him, it's called due diligence
I seriously doubt that you know what a native writer is. At the very LEAST you know NOTHING about ANTECENDENT agreement in English. You specified ONE writer but then referred to that ONE writer (SINGULAR) as they (PLURAL). That is IMPOSSIBLE as people do NOT HAVE TWO OR MORE HEADS. Further, all potential responders for this job should visit this page (https://forums.digitalpoint.com/threads/xenforo-expert.2788919/page-2#post-19389001) BEFORE you commit to writing for the OP.
I am giving that person 5 more days to get his payment and get lost.... after that there will be no payment from 13 - Sept onwards.
It's quite ballsy for you to put up a hiring ad, considering you still have payment issues to settle.