The reduced speed should apply only from 8am to midnight. From midnight to 8am you should get network speed data again but there are two things that could prevent it:
Are you sure that you've passed the 9GB of full soeed data? If you have, then the app should be offereing the option to buy a new goodbag as well as top up credit. But that might be a bug caused by the new range of goodybags that started a few days ago.
Using a browser, have a look on the dashboard https://giffgaff.com/dashboard to see if the option to buy a goodybag is appearing there. If it is not, then I suspect that the problem is a network fault and not a speed restriction.
The connectino issue was as bad in two different areas 11 miles apart, but the network info idicated that I am in range of 4G network. Restarting phone did not help. I did expect the slow down after using off 9GB, but it was practicly cut off rather than slow down. The option to buy new goodybag was there, but I refused to pay for service which was paid for alredy.
The connection is back to normal now. Since I used off my full speed alowence, it considerebly slower of cource, but nothing like that day.
Thank you for your reply.
Its highly possible that two places 11 miles apart could be affected by the same problem. Did you do the full postcode test?
Sometimes a very large area can be affected. For example, https://community.giffgaff.com/t5/Service-Updates/Restored-Issue-with-2G-3G-amp-4G-services-in-the-L... :
We were informed of an issue with 2G, 3G & 4G calls, texts & data within the following areas: Leeds, Bradford, Shipley, Dewsbury, Morley, Batley, Castleford, Pontefract, Goole, Kingston, Doncaster, Maltby & Berverley areas. Our technical teams worked hard through out the night to fix this issue and can confirm that this issue is now resolved and that all services have been restored to affected member.