Duplicate episode numbers

Before I take the plunge and buy the software, why do I see duplicate episode numbers?

For example, I have two videos in a folder, episode 9 and 10

It shows me each episode number multiple times

Thx

What type of device are you streaming from?

We’ve seen this happen with some UPnP/DLNA devices while they’re indexing/updating content.

I have an iPad

Many thx

Right, but what type of device are your videos stored on?

WD NAS device. I stream using DLNA