All students staying at Hof University for more than one semester have to do this to make sure that they will be re-enrolled for the following semester. As usual, you can do the re-registration online via the PRIMUSS-Portal.
You need to authenticate yourself with your normal user name and password. After login, you have to give the bank details (SEPA/BIC) of your German bank account so that the the administrative fee for the coming semester can be deducted by direct debit.
Normally, the fee will be deducted in the middle of September for the following winter semester and at the beginning of March for the following summer semester.