After I pay an invoice, there is a link to download a copy of the invoice. But that pdf copy doesn't show the invoice was paid! If I go back to the "payment request" email and click on "review and pay," that will take me to a page saying the invoice was paid and will let me download a proper invoice saying "PAID." But those extra steps shouldn't be necessary, especially because most of the time I do that I'm forced to log in again -- including getting a 2FA code from my authenticator app and submitting it. (That's another problem: Why can't my login and/or my 2FA verification last more than a few minutes?)