For your second question minimum GPA, is required for applicant who would like to ask for scholarship but it 's not guarantee that you will get accept. GPA is the only condition to apply to a scholarship but in the end you will get accept or not depend on many factors, such as good GPA, good English score, good English skills, good knowledge in your major, etc. Finalized is whether you apply for scholarship or support yourself the interview committees also consider all factors together to accept applicants to study at TGGS.
However, if you have no English Test Scores to apply for KMUTNB scholarship (for Master Degree) is fine because actually it is not requested as the rules (but if you would like to apply for DAAD English Test Scores is necessary) only if you have good English Test Scores it will be benefit for yourself to get considering to by the the interview committees and we recommended it.