I use this app to download video files from my Synology NAS to my Google Pixel phone. Running version 3.2.0. My problem is that only rarely can I get the entire video file (ranges from 700MB to 3 or 4GB in size) to download before it just stops downloading before completion. I then have to delete the partial file and try again. Network/WiFi connection is strong, and when downloading I typically leave the phone in one spot near the access point to minimize signal strength fluctuation.
What might be happening and how can I improve this?