This issue seems to be missing in the app.
X-Men: The Seeds of Tomorrow
Ref: https://leagueofcomicgeeks.com/comic/2627793/x-men-the-seeds-of-tomorrow-1
This is already in core as “House of X / Powers of X” and was titled like this because of the indicia. Did you try the cover scan? Worked using leagues preview art and is such a cool feature 
Woops my bad! Should’ve looked deeper. Thank you!
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No worries!