GoCardless mandates imported doesn't always bring up the customer this means I cannot match the mandate to the customer, is this an error with quickbooks?

Hello Rachel34,  Welcome to the Community 👋 We don't appear to have known issues with go-cardless for this issue. Does the customer's information match whats in Quickbooks to whats in GoCardless? Could you check this, please? Let us know how you get on. Thanks