On-line B2 extension application possible?

[taco]

Can anyone please tell me if online extension application for B2 is possible? If yes , what is the webpage address?

[immihelp]

Last time I tried to apply online for a relative, it asked for A# in the application and it was a required field. This is obviously a programming mistake as visitors don't have A#.

Therefore, I simply made paper application.

Details at https://www.immihelp.com/visitors-visa-extension/