They have some kind of filters for
Authenticity check.
Content check.
Proper drafting check with photo,location,tag.
They even put mail to edit if your post is wrong.
Again, if u earn credit coins and delete your post then ur credit coins are also forfeited.
You have to put date,trip duration,price and place proper ex. if you put 3days duration and if you just write for day 1 then they will not consider it for credit they will give you chance to edit it republish it