I sell Services on my website, usually after people pay me and I confirm their payment I sent them the data that require for using my APP it's like username and password and list of servers that they can use. I send them these info by e-mail, is it possible to build login area to make these info privet in their login area! or is there any plugin for that?
If you want you can do that. Have a dashboard build for each user using WordPres.
There are plugins which can atleast get you started:
Now create a template where you display your services as per the payments. Also make sure you have a login criteria added the template.