Why is this app eating up other storage on iOS – DS file Review

I have been going back and forth with both Apple and Best Buy for months now on why I have 100’s of GB of other storage. I finally found out yesterday it’s the DS file app that is the problem. I don’t have anything even synced to my phone just use it to access the server. At peak other was up to 208 GB. Please fix this ASAP.
Review by SunnyMcVay on DS file.