Just to add a point for completeness.
My main concern in this situation was simply being able to access my bill. If the online portal cannot be used because it triggers the “BLOCKED” page, customers still need a way to obtain their billing information.
Telecom providers such as EE Limited are required under rules enforced by Ofcom to ensure that customers can access clear and transparent billing information.
In this case the practical solution was for EE to send the bills by post without the paper billing charge, which resolves the issue.
I also mentioned that if access to the bill could not be provided through the account portal, the only alternative would be requesting the billing information through a Subject Access Request under the UK General Data Protection Regulation, which obviously would not be an efficient way to obtain a monthly bill.
Thankfully this was not necessary as the billing team arranged for the bills to be posted instead.
