Why can't I pause my ticket immediately in the first month?

This happens when you purchased your first ticket after the 10th of the month (e.g. on the 15th).

The reason (tariff regulations)

The official deadline for canceling or pausing for the following month is always the 10th of the current month. If you purchase after this date, you have technically already missed the deadline for the next month at the very moment of purchase.

The consequence

Due to these fixed tariff rules, your subscription must continue for the entire next month as well. You can only pause or cancel again for the month after that.