Your post was blank @WANGS2876 and the subject line doesn't really provide sufficient information to understand your issue properly.
If you want assistance from the Community Forum then you need to explain/describe your issue clearly and in detail.
What are the exact symptoms of the problem?
When was the SIM working ok last?
When did you last buy a membership plan?
If it was more than 6 months ago then you'll need to contact 48 support to see if they can get your SIM operational again.
If you need to contact 48 support about this then see the links in my signature below.
