Credentials no longer work / password reset no longer working

I also use Gmail.

I am not able to reproduce the issue, but I use Chrome as my browser (a difference). However, you can predictably reproduce it, correct? (That may be important.)

What we will need to do is to dig down into your computer config a bit to look for any likely culprits and then try to *exactly* match each step you take when the issue arises, including what you have open in other browser tabs.

So....

1. Your computer config... What anti-virus/firewall software do you use, if any? What Gmail plug-ins are you using? What privacy settings / protection are you using in Gmail and in Opera? I am also interested in your Opera cookie settings...

2. Do you see this when you are only using one browser tab, or when you have multiple tabs open? If multiple, what other tabs are open? Are you already logged in as the admin in a different tab?

3. When the issue arises, does the screen switch immediately from the email to the website with the dialog showing the error? (what are the actual exact steps)

Hi Steve,
1. windows defender/firewall. No gmail plugins, default privacy and cookie settings.
2. Both multiple tabs and single tabs
3. The issue no longer arises, it seems to have gone away. I'm now able to change passwords as expected.

Thanks!
Jason

One thing I noticed is that the password reset link automatically logs me into my account. Meaning anyone with just the link can login to my account (ie. they don't need to know my username).
I think it's pretty standard for password resets to force you to login after you reset your password as an added security step. I'm not sure how big a deal this actually is, but thought it merited mention.
Jason