Additional System Center tools and components for managing infrastructure, applications, and services
It seems that the issue with registering for events using your work email address may be related to the apostrophe in your email. Microsoft has specific limitations regarding email addresses that can be used for registration, especially if they contain special characters. Unfortunately, if your email address is not compliant with these requirements, it may prevent you from registering.
As a workaround, you might consider using a different email address for registration, such as a personal email that does not contain special characters. If you must use your work email, contacting your IT department or Microsoft support for assistance may provide additional options or solutions.