In order to protect your privacy, we are not entitled to back up your files on our server. All files will be stored and encrypted on your own phone.
To check if we can help you find them back, please answer the below questions.
Did you try the button Find Lost Files on the setting page?
Usually, this can help you find lost files in most normal circumstances. Please restart your phone and try it.
If it doesn’t work, please describe the problems you met in detail and it’s important to help us figure it out.
Did you use any clean tools to clear rubbish on your phone or format your phone?
When did you find the lost, like after updating the app or reinstalling the app?
What other operations did you remember to do?