Did you activate it properly?
https://community.48.ie/t5/The-Knowledgebase/Getting-Started-How-to-Activate-your-48-SIM/ta-p/53099
Is your phone unlocked for use on any network?
https://48.ie/unlock-your-phone
What PIN are you referring to?
If you still have problems then you'll probably need to contact 48 support.
See the link in my signature below or email them at support@48months.zendesk.com
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