On multi and cPanel plans, add the extra domain in the panel, create its folder, and set DNS at the registrar. The plan's site count still applies. Silver and single plans include one site. Upgrade for the difference if you need another.
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.