I recently formed a multi-member LLC, opened its bank account and have its debit/credit cards.
To buy inventories for the business, I logged into eBay/Amazon using my personal account, and then bought some stuff using the LLC's debit/credit cards.
So, the payment is done through the LLC, but the order itself is placed under my personal account.
Is this allowed? I vaguely feel like the best practice is to create a merchant account under the business's name and deal with everything there. But as long as financial transactions are completely separated from my personal ones, the means through which the transactions occur shouldn't matter.