> D7800 [...]
Firmware version? Connected to what? ISP?
> Setting up using genie. [...]
Which "genie"? Are you talking about an app, or a web browser, or
what? I'd use a web browser.
> [...] Keep getting incorrect ISP user name or password. [...]
I don't know what that means. "Keep getting" what from what? What
did you do? What happened when you did it? As usual, showing actual
actions (commands) with their actual results (error messages, LED
indicators, ...) can be more helpful than vague descriptions or
interpretations.
> [...] Please confirm what I actually enter here.
"here"? Where? Are you talking about BASIC > Internet : Login and
Password, or what? You should put in what your ISP tells you to use.
If you're talking about PPP credentials, then are there any special
characters in them?
https://community.netgear.com/t5/x/x/m-p/1354547
