I am trying to watch the K DRAMA Secret Romance - The Graphich of the movie shows but when you hit plan it is some other hispanice series.
Plex (free) has Season 1 of "My Secret Romance" on demand. (once in Plex, just perform a Search). It is also playing on Plex Live TV at times on their Viki Rakuten channel.
https://channelstore.roku.com/details/68e8d568fdd68a1197a2b9a5f69e16c0/plex-free-movies-and-tv
You can also install Viki Rakuten on your Roku device as well and watch the series that way. (also free)
https://channelstore.roku.com/details/d7d2712b1cc9f5f4293dfa2ba343234f/viki
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Also seeing that Roku Channel LiveTV channel 380 (Viki Rakuten) also has My Secret Romance playing on it (at different times than Plex).
Does look like the on demand "My Secret Romance) for the Roku Channel is linking to the wrong series. (Entre Tu Amor y mi Amor, or Between Your Love and my Love).