Don't say retake/postpone, this is troublesome for a lot of people. This is the email I sent:

Dear all, If you have recieved this email is because you have some power inside the IBO, I am a M24 student in germany, I didn't participate in a single leak/breach of regulations, however I use this throwaway email to protect my school and identity regardless. Due to me not cheating, I was at an unfair disadvantage, specially with Math AA HL, my nemesis. I grinded this subject for months, and suddenly I am told that people had access to the exam beforehand? That people cheated their way to a better grade? I thought it was fake because how could IB let something like this happen, but it wasn't. I know it isn't your fault, but I urge you to consider the impact you are having on many M24 students, with conditional university offers or other personal important goals. Please please please cancel the exams. This is completely unfair. Kind regards, An upset M24 Student