Without wanting to place too fine a point on it, your wildcard Find text isn't the same case as what you're trying to find. FWIW, 'Match Case' is of no effect in a wildcard Find.

Also, if you only want to delete the lines starting with 'more info about the item ', use:
Find = "more info about the item[!^13]@^13"

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]