App Request: Sync Downloads Folder to NAS with Old File Deletion

Seeking an Android application to automatically upload files from the Downloads folder to a Network Attached Storage (NAS) and delete files older than one week. The goal is to free up phone storage while maintaining cloud access to downloaded files. The user has tried FolderSync, Autosync, and Synology Sync without success in achieving the desired file age filtering. Tasker is also not a preferred solution.