I currently have a woocommerce cart and I am using an authorize.net DPM extension for my gateway.  When testing in test mode I receive the following error.  I know my credentials are correct.  Any advise would be appriciated.

3,2,13,(TESTMODE) The merchant login ID or password is invalid or the account is inactive.,000000,P,0,,,15.70,,auth_capture,,,,,,,,,,,,,,,,,,,,,,,,,,27A9E75DC7ED2C3A00B54C002E2B6CB4,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,3000,wc_order_536bc5e9d05cc