...
Note - keep videos as short as possible in length to avoid creating large files that need to be uploaded.
Adding photos to your camera roll
Photos taken while using iTWOcx will now be added to your camera roll. It will also be stored under a separate album called iTWOcx allowing you to find photos you've taken while using the app at a later time.
Uploading files from other apps (iCloud, One Drive, Dropbox)
...
To add a file from those services - Click on the camera icon
Select Choose File
And then follow the prompts to link your storage provider.