One forma certification - Translations Guidance

In One Forma platform there is this certification called "Translation_Certification_Guidance _EN_TO_ES(MX)", you have to find a single mistake from a source text and correct it in your response, I did terribly in my first attempt, my concern is, before you start the test they "redirect you" to an interactive course, it is supposedly prepare you for the test but I cant load it correctly, has anyone passed this test and had a helpful preparation for it?