It's not real clear what you're saying. I don't understand the "on the remove button I noted that it failed to download" part. Anyway, try rebooting everything - modem/router and Roku. Unplug the power from everything for a few seconds and then plug them back in.
Can you install the channel from the web site?
https://channelstore.roku.com/details/5138c2fba2d38619e82e1341041c9c49/rediscover-television
Or does it say it's already installed?
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