similar threads facing the same issue.

Hi Carlos,

I think you will have to add a Vault Account in PRA and when you try to connect to web app you you see in the vault account in drop down to inject in the web jumps.

Hello ​@Carlos Mendonça - The PRA Web Jump Credentials Injection feature is dependant on the remote web page itself both displaying and making visible the text boxes for the feature to inject into. 

For instance, maybe the username and password boxes are actaully embedded inside other elements or iframes. Or maybe the those two boxes are loaded separately after the page itself fully loads. I have also seen it where the text boxes are programmatically created on the page far after the inital web page has loaded.

With all this in mind, can you advise on the website itself and check to see what is loaded in the HTML when you first load the site? Are the boxes all there on load or not?