Really sorry to hear you're blocked on this, being unable to log in to npm when you depend on it for work is genuinely frustrating, and waiting days without a response makes it worse.

A few things that might help unblock you right now:

1. Try logging in via the CLI instead of the website (or vice versa):

npm login

2. Try logging in with your GitHub account if your npm account is linked to GitHub, go to npmjs.com and look for "Sign in with GitHub".
3. Reset your password at npmjs.com/forgot, even if you think your credentials are correct, a fresh reset sometimes clears login issues.
4. Check npm status at status.npmjs.org to rule out any ongoing incidents.

If nothing works then it's best to Tweet/post at @npmjs.

If this was helpful, please mark it as answered. Thank you!

I have encountered the same issue. After logging in, a 404 page is displayed. The password reset link prompts "Your password reset link has expired or is invalid." When trying to reset again, it prompts "looks like something unexpected occurred! diagnostics id: 9dbaaadecd4fb625_feaf"

Firstly, checking status.npmjs.org to rule out any ongoing incidents affecting your account region would be worth giving a try.
If nothing works then I would suggest you reaching out publicly on X @npmjs and referencing your ticket number, public visibility often accelerates responses.