We have recently refreshed our branding across our offerings and changed the names of our pricing plans. If you have signed up before Aug 9, 2021, please click Previous plans to view your applicable plans.
We assure you that this change will not impact your product experience, and no action is required on your part.

There is no restriction in Freshdesk regarding the number of customers you could add to your account. 

Please navigate to the customers' tab on the global header and click on "new contact" to add them. You could add unlimited contacts to your account using the "Quick Create" section in the customers' tab or by using the "Import" contacts to your account.