synology photos upload to the different folder after upgrade to latest version

Hi,

I sync my iphone's photo to synoloogy photos app. Currently, i found new photo is backup to "iPhone" folder. And previously, it was using device name as a folder to backup the photo. So now, i have 2 folders. Anyone know how to fix this issue? I just want it to use the same folder as in the past that was the device name. Thanks