The support staff was very understanding and polite.
Excellent course to improve your writing if you are in research.
I got the solutions in less than 4 hours.
My disagreement was based on the writing guidelines I have learned throughout my life while attending courses/workshops offered by professional editors and university professors as well as while studying different materials (grammar books and writing handbooks.
It is a good course in overall, it gave me an opportunity to practice writing and refresh some useful informations about how to write an argument.