If after checking guide still not sorted contact an AGENT using link included and they will check for you, only AGENTS can sort out account issues, good luck
REBOOT YOUR PHONE to allow the goodybag to kick in. Also check the signal in your area by following this link https://giffgaff.com/coverage-and-service for the network status or coverage. The network status should give you details of any local issues, including planned work, as well as showing signal strength & outages.
THE WEBSITE IS UPDATED HOURLY and may not display any issues at the current moment. If the signal looks all good then you can perform a manual roam Please check out this http://community.giffgaff.com/t5/Using-giffgaff/Force-the-change-of-SMS-settings/ta-p/4871794guide on how to perform a manual roam.
Buying a goodybag or credit issues (ONLY AGENTS CAN SORT OUT ACCOUNT ISSUES)
Direct link to ask an agent:
EXPLAIN what has happened in box provided
HOPE THIS GUIDE HAS HELPED YOU