I have logged onto my Dropbox account and all of my files are missing.

hi , i have the same problem , I'm totally stressed about this , i try to contact support by chat but it's like that they don't understand my problem . I have had my dropbox account since 2015 ... Two years ago I subscribed to a team plan that I canceled in June 2024 following difficulties encountered by my company. I was planning to subscribe to a more basic plan in 2025. I suspected that you were going to delete files but I thought that this only concerned the "montage" folder, the one that was shared (the folder concerned by the team plan that I had dissolved) I was planning to resume a basic plan for my files that I had kept with you for years
My entire dropbox account was overwritten, as if it did not exist. I logged back in, it's as if I were a new user.  how this is possible ?  why all the dropbox folder was erased ? and not only the share folder  ?    I see that some links that i share still active, does that mean that the files are still somewhere? 
Is there a chance that my files are still active? or i lost all my folder ? 
What can I do? if someone can help me .