Your post was blank @Lucasl1213 and the subject line isn't really that clear.
If you want assistance from the Community Forum then you'll need to explain your issue more clearly and in more detail and give a bit more context.
When were you last able to successfully buy a membership plan?
What exactly is happening now?
What happens when you try to buy a membership plan here?
How/when/where are you being told that you ordered a new SIM?
What is the verbatim message?
What exactly is/isn't working with your current SIM?
Connection to the 48 network - i.e. signal bars?
Incoming/outgoing calls/texts?
Mobile data?
If you need to contact 48 support about this then see the links in my signature below.
