Hello technical team!
I normally use firefox search engine but sadly it has blocked acces to parts of giffgaff! I'm able to access my account and purchase top ups etc but nothing else!
Firefox message is 'connection to site not secure'!
Using Chrome at the mo!
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Are you getting that on all pages, or just on a particular page?
Most giffgaff pages contain a lot of third party content from google, facebook, twitter and other spyware sites so the fault could be with one of them rather than giffgaff itself.
If it is displaying a certificate error, there should be a button to display more information or details which will identify the particular site or certificate that's causing the problem.