Maybe you'll get lucky and have someone familiar with this problem and knows the answer see your post here, but seems to me that this would be a question best directed to Harmony.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
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