Blocked data from an app

Hello, a few days ago Dropbox blocked my access to the data of an expense tracking app that I have been using for years, stating that someone other than me had tried to access it and that the block was for security reasons. Nobody else was trying to access it, it was actually me who accidentally triggered the security measure. I have contacted Dropbox twice to ask for my data to be restored, but they are not taking any action and are referring me to the chat. I believe that if they blocked my access, they should be the ones to unblock it. It is very important for me to recover this data. I am seeking help. Thank you very much.