Need help accessing my account due to 2FA, and security one-time code.

Hello everyone!  I am having the same issue as many people have had, but I am having no luck in getting it rectified and dropbox will not return any of my emails.

I had two devices authorized on my account. My desktop computer and my phone, both had access to my dropbox. The email I had attached to the account, was for a business that was purchased and absorbed, so those email addresses were replaced and we had no access to them any longer. My devices however still had access, and I thought I had changed the recovery emails to my new email, and apparently that is the case. I needed a new phone, and of course the device wasn't recognized, so it said it sent the one time code to the other devices.  I went to check on my desktop, and windows had performed an automatic update and had restarted the computer and I was unable to login there as well suddenly. I tried answering all of the questions via the recovery page, and it says that some answers are incorrect, and since I set the dropbox account up in 2017 I may have some of the dates wrong, I just don't recall exactly, but I thought I had them right.  So as it sits, my desktop cannot access it, despite previously working for 7 years and is a recovery device, and my new phone cannot access it because I need a recovery code.  I traded the old phone in for a credit and completely forgot about the 2fa, until it was too late.  Honestly I don't even recall adding 2fa on dropbox, because I never would have, but maybe it is a default setting, I guess I don't know.

I am a technical support specialist, and I had over 30 years worth of technical data, error codes, manuals and many other items that are irreplaceable. I even emailed dropbox to try and upgrade my account so I can use that account as a technical database for all of our technicians to utilize remotely in the field, but nobody will respond to me. I am at a loss, because this information is all of my personal stuff and is no longer available to me and I need it badly.  If someone has a suggestion, I would greatly appreciate it, thank you.