Unable to open receoverd files

After recovering deleted files I am unable to open any files. I receive the message that the file format or extension in invalid. this si happening to any files I try to open regardless if it is an excel, word or photo format.

2019-10-14_11-24-58.png

Did anyone ever get back to you on this? I have the same issue.

Recuva found all my missing files but due to the "Extension" Error I cant open any of them. File type does not matter.