In the console I can see the response from the module and the customer data correctly.
a:9:{s:9:"firstname";s:7:"scarlet";s:8:"lastname";s:8:"johansan";s:5:"email";s:18:"[email protected]";s:8:"password";s:60:"$2y$10$vT7lJl6p67gfZq4Kt5j3Ye2.R/RTnWmvC1c1wEsxi6TLwSN6gfHg6";s:14:"plain_password";s:15:"AAAbbb@1234$$$$";s:7:"company";s:0:"";s:5:"siret";s:0:"";s:3:"ape";s:0:"";s:8:"is_guest";s:1:"0";}a:9:{s:9:"firstname";s:7:"scarlet";s:8:"lastname";s:8:"johansan";s:5:"email";s:18:"[email protected]";s:8:"password";s:60:"$2y$10$vT7lJl6p67gfZq4Kt5j3Ye2.R/RTnWmvC1c1wEsxi6TLwSN6gfHg6";s:14:"plain_password";s:11:"Abcd@1234$$";s:7:"company";s:0:"";s:5:"siret";s:0:"";s:3:"ape";s:0:"";s:8:"is_guest";s:1:"0";}a:9:{s:9:"firstname";s:4:"Test";s:8:"lastname";s:6:"Tester";s:5:"email";s:14:"[email protected]";s:8:"password";s:60:"$2y$10$VGPDPJv.TMc/1K/RzuntueKWyhD/haVygAXconepjGpVVrSeNsjIK";s:14:"plain_password";s:9:"undefined";s:7:"company";s:0:"";s:5:"siret";s:0:"";s:3:"ape";s:0:"";s:8:"is_guest";s:1:"0";}