I have and issue with passbolt not recognizing some username filds in some sites.
I was wondering if ther’s a way to customize the code or the configuration so i can make it recognize the form field
Hello @Lorenzo_afa , welcome to the forum 
While I do understand your concerns, I wanted to let you know that with the upcoming major version we may give more space to the users for the autofill e.g., with XPATH. However, nothing is sure for the moment so I don’t have any ETA to share. It’s on our radar that’s for sure.
In the meantime, yes it’s possible to improve the autofill detection e.g., here but that also means that you will have to build the extension for all of your users every time and for each update, that’s not the way I would recommend. If that’s not a blocker for you, I would consider waiting for the moment.
Feel free to share any other concerns
Thank you so much, I edited the styleguide and compiled the extension, but when I try to load it into firefox (install add-on from file) I have an error stating : “this add-on can not be installed because it appears to be corrupted”, however i can load the same add-on in firefox as a temporary extension and it works without any issue and with the working modifications. Do you have any idea of what is causing this issue?