This €12.99 Plan is only available to new 48 customers who order their 48 SIM and purchase a €12.99 Plan from the 5th April 2022. A one-time activation fee of €12.99 applies with the first plan purchase.
First plan price of €12.99 plus one-time activation fee of €12.99 = €25.98.
If you need to contact 48 support about this then see the links in my signature below.
As @dalyer explained above, for your first month with 48 there is a one-time activation charge of €12.99 and €12.99 for one month of your membership. From next month onwards, it's just the membership of €12.99.
