Error when clicking My Account link in My O2 Business portal

[ShawnQP]

Hello, I am trying to access the O2 Business portal, and each time I click the my account link I get the below error.

"We can’t log you in because of the following error. For more information, contact your Salesforce administrator.

NO_ACCESS: Unable to find a user"

I have spoken to the business support team on various occasions and they are unable to help me, which I find hard to believe.

Can anyone shed some sign on this error and how I can get it resolved?

Thank you in advance

[madasaf1sh]

@ShawnQP 

No one on here can help, as that is something o2 CS need to raise to the o2 IT Team, which manages Salesforce..