Hi ,
I am having the same issue.
When I try logging into dropbox I get message as below. It was working fine 10 days back I never had an issue. All sudden now I am getting below error message.
Two-step verification text message couldn't be sent. <a href="/help/364">Help</a>
I do not have backup code; Dropbox is not linked to any device. I do not have backup phone number. Please help! my ticket #19908374 Larry was looking into this issue none the of steps is given works for me . Please help!
Suneetha