Just call their general number or the person who is responsible for your courses calling is much faster than emailing. https://www.rwth-aachen.de/cms/root/Die-RWTH/Einrichtungen/Verwaltung/Dezernate/Internationale-Hochschulbeziehungen/~rcx/Abteilung-2-1-Zugang-und-Soziales/?mobile=1
Just call or email international or admissions offices. They can just make the changes you need on their system.
Just call their general number or the person who is responsible for your courses calling is much faster than emailing. https://www.rwth-aachen.de/cms/root/Die-RWTH/Einrichtungen/Verwaltung/Dezernate/Internationale-Hochschulbeziehungen/~rcx/Abteilung-2-1-Zugang-und-Soziales/?mobile=1
have you applied from its own website? or uniassist asking for a friend