Prince Harry has been blasted for “never having any idea” about being a businessman as the Sussexes’ brand plans continue to falter. Meghan Markle had “soft launched” the pair’s lifestyle brand, American Riviera Orchard, back in March – but despite sending out jars of Sussex-branded strawberry jam to Hollywood A-listers, it appears things haven’t gone to plan. Alongside the jams, Meghan is understood to have filed to register a number of trademarks for homewares, make-up and pet food – but has run into difficulty when trying to find partners to kick-start her brand. And in a bombshell new clai…