Typical reasons for this:
* You didn't upload a package file
- properly
package your channel on your Roku and upload it
* You live in a different region than the regions you assigned to the channel
- add your region to the channel properties
* You haven't published the channel yet but are using the Vanity code - the vanity code won't work on an unpublished channel.
- Use the Access Code instead of the Vanity code to install the channel.