Whatsapp Clone Data Not shown

Hey there, there is a huge problem while using the dual whatsapp. All the media files are not shown in gallery or in my files. Actually I want all my data back. I'm unable to forward any document/file/media. This is a huge problem that I'm facing. Whatsapp is not working properly. I backed up all my data and then I reinstall the whatsapp clone but for a while I'm glad to see my all data back but It's just for a while after few seconds it shows the error picture and suddenly all my whatsapp media removed.