The fact that they say that ; "Our world-class academics are ready to help." tells me the students who found their work helpful do not know the meaning of quality writing. They are unable to differentiate between academics and academicians. The latter is defined as a member of an association or institution for the advancement of arts, sciences, or letters. Whichis what they were trying to imply / refer to. The former is often seen as relating to a college, academy, school, or other educational institution, especially one for higher education. It is a reference to a physical academic location.
While academics in noun form is similar to academicians, it is the latter noun which is more often used as the descriptive tum in academic circles. This simple difference that they failed to spot tells me their writers are problematic and clients will be caught in an endless revision cycle.
The opinions are that of the author's alone based on an individual capacity. Opinions are provided "as is" and are not error-free.