@Anubidin, for some reason, you are the third person in the past few days with the exact same complaint. Your degree of understanding on how the Manager program works is not clear. So first, are you aware that there is an application (the program itself) in one location and a group of data files containing the actual accounting data and supporting information in a separate application data folder? That data folder is the right side of your screen shot.
When you launch the program, it looks in an index file to see what businesses you have added and where they are. The index file is the first one with all zeros (and no hyphens). The two files with hyphens in their names are obsolete relic files. Move them to a safe place outside the application data folder. You should not need them, but do not delete them yet, until we make sure.
Your data should be in the file beginning with 71… that @sharpdrivetek mentioned (the one without the hyphens). But you may not be able to open it directly, depending on what version of the program it was created with. You need to launch the program and open it from the Businesses page.
Since you have now played around quite a bit trying to recover your data, it is possible the index file got corrupted. So if you do not see your business listed on the Businesses page, click the Add Business button and follow through with importing that file with the name 71… You will need to be sure your file search is set up to show hidden files, or navigate to the application data folder by pasting the folder location into the search function. When the file opens, it may have the long, hexadecimal name instead of your actual business name. If so, you can click the Rename button next to the name in the open Manager window to change that.
If the business you open contains your latest data, you can delete those files I asked you to move to a safe location. If it does not contain your latest data, go back to the Add Business button and import the business that has the hyphens in its name. See if that is the correct one. You can read all about this process in this Guide: Manager Cloud.
Once you have found the proper data file using the latest version of the program, it can no longer be opened by an older version of the program, so do not try. When you have found your latest data, make a backup, using the Backup button in the program. Be sure the backup is not on the same drive as the program, or you are wasting your time. When (not if) your drive eventually fails, your backup will be lost along with your main data file. Put the backup on another accessible drive or in cloud storage. Read about that here: Manager Cloud.
One thing that is puzzling is that all your files in the application data folder have the same modification date. This should not be the case unless you did things you have not yet told us about.