Thanks for your post and apologies to hear you're having an issue with accessing your billing.
If you are using a secondary account details then you would need to revert to using primary details instead.
We can certainly check this out for you but in order to do that I will need to confirm some information with you.
I have sent you a private message regarding this. Just click on the little plum envelope at the top right-hand side of the page to access your inbox.
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