Some potential trouble has arisen.
My disability payment drops tonight onto my Go2Bank account, but I may not be able to withdraw funds from it to pay my rent, because I am waiting for a replacement debit card to come in today via snail mail. I had to order a new card because the old card got lost.
If it comes in, no worries.
If it doesn't, I'm in big trouble because I need that card in order to withdraw the funds I need to pay my biweekly rent, and my landlady needs that right then.