Samsung WatchON is no longer available.
You will continue to have access to any content purchased through WatchON by visiting each content provider's application directly.

However, if you want to use the remote control feature on your phone, you can download an alternative application like “Peel Smart Remote” from Google Play.

We appreciate your understanding and our Customer Support team will be available to assist you with any questions or concerns. (help.content.samsung.com)
From version Samsung WatchON 15011501.2.03.64:
In 2.03.57
- Lollipop OS Support
- Bug fixes
All versions