device maintainance after update deleteing my personal data

[Wabii]

hi all. i have S7 edge G935FD . now after recemt update of device maintainance i am having this issue.
i need help.
my whatsapp data like documents and stories automatically getting deleted and after i updated device maintainance. and its done when device maintainance do its trick after some hours or when i do it manually. and also
my 3rd party downloaded files (from app videorder) e.g mp3 mp4 are automatically getting deleted.
any youtube downloaded videos are also deleted after sometime.
give me suggestion

[Neilrose]

Please add a review regarding with this problem on play store so that they can fix it. serch this device maintenance on play store and add a review. thank you.

[Wabii]

ok I'll do it

[Rahulmk]

same prob here