Acceptance of Delaware LLC by US customers online
Is it due to confusion about sales and service taxes?
I see no reason why anyone would have a problem doing business with a Delaware LLC. Many businesses, especially Internet and eCommerce, are registered in Delaware.
Since Delaware has no sales tax it means you don't need to collect any taxes from your Delaware buyers. It does not affect buyers in other states at all (meaning you don't need to collect sales tax from buyers not located in those states where your company has nexus).