Thank you for the information. 

However the problem is I cannot register an email address on my account - every time I try to do so, I am directed to pages where I am asked to enter the email address already registered to the account…. which I can’t because I’m not able to register one!

It might make more sense if I show you what I see.  I’m following these instructions from the help pages:

How do I set up my online account?

Step 1: Enter your email address

Click here then enter your email address and click Submit.

When I click on ‘here’ I see this:

Let's get started!

Just enter the email address that's linked to your OVO or SSE energy account. We'll email you a special link to set your password.

Email address

Confirm email address

Submit

So you can see there’s no option to register a NEW email address (in order to set up an online account).  There’s never been an email address linked to the OVO account, all meter readings were done by phone and all correspondence by post.

Any ideas please?  Thank you!

having the same problem dose not mater what i do just comes up something gone wrong  will have to call but phone but  line shut at 1700 and i still at work need them to be open longer not that impressed since the change from sse