Custom Fields not showing in confirmation emails or outlook invite

I've set up a shared booking calendar for one of our sales team. 

I've set up 2 services: an initial virtual call and then an on-site meeting.

2nd type = Security Consulation:
Meeting type is on-site.
Custom fields include: 

• Customer Company Name
• Customer Address
• Products to be discussed

Problems

• I've disabled the Teams invite option on this service but it's still showing in the customer invite.
• When the invitation comes through, it doesn't have any of the custom fields contained in the appointment for either me or the customer
• It's not synching with the sales person's calendar for availability.

Having looked at previous threads on this:

I can create custom fields and make them mandatory

The maximum of attendees is set to 1 (ie not a group service)

The sales consultant has shared his calendar with me with the access can see when I'm busy.

Thanks in advance for help!
Kind regards,Outlook inviteservice setupservice setup

Julia