Is anyone having issues with QuickBooks runny incredibly slowly online and also the app closing after marking an invoice as paid?

Hello Stephen_gilbert-, thanks for posting on the Community page, we have had no other reports of this come in, can you try refreshing the data in the app and seeing if that helps resolve it for you and also can you try clearing your cache and cookies to all time, close the browser down, reload it and see if that helps to make it runny a bit faster for you on the web.