Open the DNS zone and set MX to the mail host shown in the client area. Remove conflicting MX rows. Changes propagate with DNS cache. Business email on its own plan uses the MX values printed on that order.
Sign in to the client area and keep the order reference nearby. Prices and windows on thedatadynamo.site stay in Indian rupees, with a 7-day cancellation on new hosting orders and no fee return on a domain once it is referenced.
Write the exact error into a support ticket. For mail and DNS, allow up to 48 hours of cache time before treating the change as failed. For a plan that is too small, use an upgrade and pay the difference rather than opening a second overlapping service.