it is blank, but your change-of-course receipt shows Microbiology, then the most likely explanation is that JAMB has not fully updated your profile display yet. Since it has been over a week: Keep your receipt safe. Visit the CBT centre where you made the change and ask them to check the status on the JAMB system. Also check JAMB CAPS periodically. If the CBT centre confirms the change is successful, there is usually no need to pay again for another change. For your admission chances, your combination of: JAMB 173 English B3 Biology A1 Chemistry B3 Mathematics C5 Physics C5 is competitive enough to keep pursuing Microbiology at Usmanu Danfodiyo University Sokoto, especially if the course cut-offs remain around the figures you mentioned. Did the CBT centre give you a printout that contains a transaction ID and shows both your old course and the new course (Microbiology)? If yes, that is strong evidence that the change was processed.