On Depop, most of her interactions with customers happened only when they wanted to buy something, Ms. Lopez said. But on Instagram, she said, she could share more personal moments from her life through features like Stories — which people use to post photos and videos that disappear after 24 hours — so “people get a feel of who I am and who they’re buying from.”
Ms. Lopez still spends more time on Depop, where she has 30,000…