Lightning Channel Back Up File

I have figured out how to get my backup id and the most recent backup file the pops up when i get it in ssh is older then the ones that Email support has sent me, so I dont know if my node was down longer then i thought but i have the file name if that helps, ive tried 4 different backup files so far but i receive the error “Unable to recover channel backup, unable to unpack chan backup: chacha20poly1305: message authentication failed” so i dont think they are the right files. Has anyone else had this problem or a solution? Thank you for any help

@mayank any ideas how to figure out which file i need or is it trial and error