Hello Becky47,
Welcome to the Community page,
could you send us a screenshot of the error you get when you enter your HMRC ref number in. Thanks
Hello becky47,
I've reviewed your profile and it seems that you've already did a few troubleshooting steps on the other threads. It would be best to contact our Customer Care Team to further investigate this issue. Here's how you can reach them:
Please know that we are here if you have additional queries.