I can help you connect your bank acccount to QuickBooks, dj2fit.
Let's perform some troubleshooting steps so you can load and save your entry. There are times that the browser stores frequently accessed data, thus causing websites, like QuickBooks Self-Employed, to act weirdly. Let's try logging in to your QBO account using a private. To use a private browser here's how:
Ctrl + Shift + N for Google Chrome
Ctrl + Shift + N for Mozilla Firefox.
Command + Shift + N for Safari
Once logged in, connect your bank account there. If this works, it means that you need to clear the browser's cache so the system can start fresh. If you get the same result while using a private browser, I recommend switching to a different one.