Hi wintvelt, Thanks for sharing the required information for us in PM, based on our investigation result, it seem that your DNS records don't added correctly or missed some records, please check if the DNS record have been added correctly, especially the CNAME records and SRV records. The following image for your reference. Hi Caz Eustace, I suggest you to open this link to check the steps on how to delete your Skype account.

Understanding the Context

Let me know if you still have questions.