Your post was blank @Leonag1773.
You'll need to provide a bit more information and context than that if you want assistance from the Community Forum.
What happens when you try to buy a membership plan?
Any error messages?
When were you last able to successfully buy a membership plan?
Is your payment card still valid, not frozen via your online banking, and there are sufficient funds in the account if it's a debit card?
If you need to contact 48 support about this then see the links in my signature below.
