More locations: Now over THIRTY. More choices: special programs, volunteer positions, language classes. More security: Members of BBB, all courses externally moderated. More Accurate Info: No hand-picked testimonials, all course feedback availble online. More Support: worldwide lifetime placement assistance. More Experience-running worldwide courses for 10+ years. More FUN! ...... TEFL International
From their website, it seems the course is online. Online courses are accepted in some parts of the world - and in some not.
I suggest you move over to Dave's Job Discussion forum where there are country-specific forums and post your question about the course in the country forums where you are interested in working, so that someone can tell you if an online course will be sufficient wherever it is you want to go.