The one time activation fee isn't negotiable.
It's part of how 48 works.
€12.99 Plan
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.
From time to time they offer a second month free which effectively cancels out the one time activation fee.
I don't think that this offer is available at the moment though.
If you need to contact 48 support about this then see the links in my signature below.
