Registrated Mail no longer exists - can't get the Code to login.

Hey everyone,

so i have a bit of a problem here lol. I created a Dropbox Account in August 2023 with a freshly made gmail account being .de instead of .com . Everything worked fine back then, I uploaded some files and had no issues. I haven't really touched the account ever since, so when i needed those uploaded files today I was stunned to see that the gmail.de account i had doesnt exist anymore, however whenever i try to login via the dropbox login ( I still have the email aswell as the password noted down and saved in my Iphone Password safes) that theres this 2 Factor Authentication which sends a 6 Digit Code to my - u guessed it - no longer existing Gmail Account.

I tried using the Dropbox Site that pops up when you click " I cant login", filled out everything i knew about the account that i used back then to create it but after entering evreything as good as i can remember it keeps telling me I have to write a Mail to support @ dropbox.com directly. Did that and the automated message came right back basically saying that i should try these and these steps but none of them really answers my questions.

Is there ANY way to change Mail in the Dropbox Account I want to get into WITHOUT having to put in the Code or even login in (i.e an admin / support could change that for me)?

Actually super bummed out as these files do hold a certain emotional value to me and just not being able to get to them just sucks lol.

FYI: Im on a seperate Account i used WAY back in the Day writing this. 

Also cant just open up a New Gmail Account with the Mail i used to register here a Year ago since gmail doesnt let me chose ".de" instead of ".com" . 

So if anyone here knows how to either get into this account without needing to put the 6 Digits they send to your Mail or any Mod / Admin could change the linked Mail to another mail that would make my day.

(Yes i do have the Password for the Account i cant get into, it accepts the Password aswell )