The provided user information isn't valid | iPhone XR

[erica s.8]

Haven't used Dropbox for a while. No problem signing into my account on dropbox.com. No problem re-installing on my Mac and managing files from there. I removed about a dozen old linked devices, keeping my main computer because of the free account rules, leaving just the main computer linked.

• Attempted to sign in on an iPhone XR not previously used with DropBox.
• Checked app was properly updated to latest release available for iPhone XR.
• Tried three times to log in. Each time, I was sent a one-time security code by mail, which I entered.
• The app would not allow me to sign in on the iPhone with the security code. I did carefully check each time that the security code matched the email. (Plus Apple provides auto-fill, detecting the code from email, and they matched. Tried once with auto-fill, twice with hand-entry.)
• After the third attempt, all logins on the iPhone XR now say "The provided user information isn't valid". I don't even get to the 2FA/security code email step.
• Web: No problems.
• Mac: No problems.

I was planning on using DropBox to store presenter notes for a trip in about a week.

Help appreciated. Thank you in advance.

[Mark]

What version of Dropbox and what version of iOS is the iPhone using?

[erica s.8]

Version 358.2, updated 3 weeks ago

[erica s.8]

It is running iOS 17.2.1

[Mark]

Have you checked to see how many devices are registered at https://www.dropbox.com/account/security ? If you are a free user you are only allowed 3

[erica s.8]

I removed all but one device before attempting to install. The current number is 1. The desired number is 2.

[erica s.8]

• Changed password on desktop web.
• Rebooted phone.
• Confirmed phone could log in via web.
• Phone still unable to log in via app. "Sign-in failed. The provided user information isn't valid."

[erica s.8 · Accepted solution]

So, apparently after updating new password on Mac, it takes time to propagate via iCloud to iPhone. When I "revealed" the password, it showed I was using the original password before password reset a few minutes ago.

Manually typed in the new password I just set on desktop web. Got in, was bombarded by "UPGRADE NOW!" but...seems to be working, even if the UX is a little hostile.

Thank you for your help. Hopefully this is solved.