Your post was blank @fernleigh and the subject line doesn't really provide adequate information to understand your issue/question properly.
If you are having an issue or have a question and want assistance from the Community Forum then you need to explain/describe it clearly.
What are the symptoms of the problem?
What happens when the SIM is inserted into your phone?
Any error messages?
What works/doesn't work?
Connection to the 48 network - i.e. signal bars?
Incoming/outgoing calls?
Incoming/outgoing texts?
Mobile data?
Any error messages when you log into your My48 account?
When was the SIM working ok last?
When did you last buy a membership plan?
If it was 6+ months ago and consequently 48 disabled the SIM then you'll need to contact 48 support to see if they can revive it for you.
If you need to contact 48 support about this then see the links in my signature below.
