Here we integarted 3 payemnt system , like PayPal Chained

Here we integarted 3 payemnt system , like PayPal Chained Payments , PayPal Payflow Pro , Simplify Commerce by MasterCard

Now in 1st only email id is required then in frontend it gives error of authentication 520003 - Authentication failed. API credentials are incorrect

in 2nd a account is not getting setup

in 3rd both the test and live account number not working so no payment is working

Could you please help us asap