Collection: coll12

I am a newbie and in my trial period. I tried to edit the theme. But it keeps saying "you have no products in your collection". I deleted the collections that I didn't have anything to add. I created one collection and added my sole product in it. But even after saving, and then going back to edit my them it kept saying the same error message above. Could anyone please help me here if by letting me know what is happening here?

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