Hello, Marta. I appreciate your effort in resolving the issues you encounter. Could you share the exact error message you see when trying to connect to your bank? This detail is crucial for identifying the root problem and finding the correct fix.
Regarding your payment setup on invoices, please elaborate on what happens when you add a payment method or set up payments. Small details, such as unresponsive buttons or missing options, can be very helpful.
If you haven't already, please sign in to QuickBooks Online using an incognito window to help bypass any corrupted data stored in your usual browser. If the issue persists, try restarting your browser and ensure you’re using a supported and up-to-date version.
I’ll ensure this conversation remains open for any future updates and discussions.