Hi Rarney12 👋 Welcome to the community forum! Thanks for posting.
Sorry to hear you are having some difficulties getting your My VM and My O2 accounts linked together. There were some changes to merge the two platforms last week, which has seen varying issues for some customers.
Just a few questions to help us isolate which issue you are having and then offer troubleshooting steps;
1) You have mentioned that you are a new customer - are your services installed and active yet? If not, it may be that we need to wait for your services to complete installation ahead of your completing registration for My VM to gain access.
2) Are you able to access My VM? (Is it just the linking the two accounts bit that's not working?) If so, there should be an alternative route of linking your My O2 account by adding the mobile number in your My VM settings. Head to Account settings > Identity & Security Settings > Link O2 Account (there should then be an option to add the O2 account. If it doesn't give you the option to input the number straight away, but shows a 'try alternative verification method' link - please click on this!
Let us know how you are getting on and we will continue to offer support from there. Thanks for your patience in the meantime! 🌞