What does your My48 account page say about your current membership and expiry date?
https://www.48months.ie/my-48
Does it mention any "next" membership and start date?
What does your My History page say about recent payments/purchases?
https://www.48months.ie/my-48/my-history
If necessary contact 48 support for assistance.
See the link in mu signature below.
Hope this helps.
