Hello @Conor Kelly
Thank you for reaching out. I suspect that your account currently does not have elevated access to Azure resources. I would suggest you to please elevate your access to manage all Azure subscriptions and management groups. You can perform this by following steps mentioned on following article: Elevate access for a Global Administrator.
I hope this helps to resolve your query. Please "Accept the answer" if the information helped you. This will help us and others in the community as well.