Hosting, client has custom DNS for Exchange

Hi, I’m new to Webflow and have just finished my first site for a client.

The problem is I am unable to remove and replace the A Records (@ and www) on the DNS as they are being used for the clients’ Microsoft Exchange server.

The solution offered by the Webflow Help Desk was totally over my head. Anyone able to overcome this issue as I’m sure it can’t be unique.

Thanks in advance.

Here is my site Read-Only: LINK
(how to share your site Read-Only link)