Annoying login problems on Opera

UPDATE 1/8/24: PROBLEM RESOLVED.

Any thoughts as to why the Opera browser (my default) all of a sudden is having problems logging into Delta? As of roughly Christmas, I had no issues, but now Delta does not recognize me. I enter my login info and Delta.com returns that it can't find my account. I do NOT have this problem on Edge, Chrome, the ipad, or the phone, nor on other computers, so the issue is unique to Opera on my PC. So it's clearly a setting of some kind. Opera is a Chrome clone, so anything that speaks Chrome is supposed to be able to speak Opera too.

I closed the browser, cleared the cache, cleared the history, nuked all cookies, rebooted the computer, made sure that cookies and popups are enabled for delta, disabled any VPNs, logged in on other browsers and affirmatively logged out, and still am getting a rock.

I remember having this problem once before, and to fix it required doing something amazingly, stupidly easy but not obvious. Any thoughts on how to fix it (besides "Well, don't use Opera and use _____ instead.")?

There's another thread floating around about this I think, though I'm feeling too lazy to go looking for it right now

I am having sort of the opposite problem -- neither Chrome nor Opera works to login on my Android phone, but desktop Chrome on my Chromebook is fine. This started I think with a recent site rollout in late December maybe? Then it appeared fixed on my phone a few days ago, but is back to being broken.

I was having the same issue with safari on my MBP, running the latest macOS with safari, but not chrome. Would say something like �cannot verify account�. Also worked fine on my iPhone mobile safari. Just wouldn�t let me login on my Mac.
This lasted a few days and then fixed itself without me doing anything. I assumed it was just typical brain dead delta IT.

I�ve intermittently also had a problem (also only on safari on the Mac) where I could see all my upcoming flights but not click into the details for any of them in My Trips. I�d have to click on Find My Trip and manually enter my info, even though the flight was listed above on that page. This also only about a week and then started working again.

Same here - couldn't use Delta.com on my Mac on Safari. I just log in with Chrome and it is fine. Haven't tried using Safari to log in for a week or two.

Same here with Safari on my Mac. Still broken. I thought maybe my password locked out so I attempted a password reset, and that would not work either.

Sounds like an issue with browser cookies, maybe? Have you tried clearing your browser cache?

I had this issue on Chrome on one of my computers. Logging in in incognito mode worked for me.

Can't speak for others, but that was the first thing I tried cleared everything, didn't change the symptoms.

I fixed the problem. Like I said, it was something mind-numbingly simple but not obvious.

I deleted the stored login/password (after having nuked cache, cookies, history, etc. previously) and then logged in again. Worked fine.

FWIW it's now working again on Android Chrome without my having done anything in the interim.