clientarea Unable to login to Client Area when using external APIs

[Syed Ans Shah]

hello,

i am having issues to login user to client area when using external api to add the order and client.

the client creation and order creation  is successfully using external api like in document:    https://developers.whmcs.com/api-reference/addorder/

"https://www.example.com/includes/api.php?action=AddClient"

but when clients uses the user email and password to login it says login details incorrect. please try again. i have attached image. i have also checked the tblorder and tblclients everything is same as when using default procedure of whmcs internal api.

i dont know where i am doing wrong.

current version of whmcs is 7.7.1.

help required.

thanks in advance.

[Syed Ans Shah]

@brian! any help please? it is really urgent.