Hello there, @Clare492. I've got here some steps to help get rid of the error so you'll be able to connect your NatWest account to QuickBooks Self-Employed (QBSE) seamlessly.
Thanks for posting here and sharing the details of your concern. To help resolve this, let's first verify if this is a browser issue. Experiencing odd behaviours when doing tasks in QBSE is sometimes caused by a piled-up cache in your browser. The initial step to this is using an incognito mode. This does not store cache and will provide a clean slate. Below are the shortcut keys you can use:
- Mozilla Firefox: Ctrl + Shift + P
- Google Chrome and Microsoft Edge: Ctrl + Shift + N
- Safari: Command + Option + P
Once signed in, attempt to connect your account again. If this works, go back to the regular browser and clear the cache to get rid of the stored junk files. If not, you can utilize other supported browsers or devices. Might be that the current one you're using has a temporary issue with the program.
If you still get the same error, let's now check the pop-up blockers on your browser and ensure it is enabled before connecting the account.
You can also manually upload your bank transactions to QBSE via CSV files as a workaround.
Once transactions are in, your next step is to categorise and match them in QBSE to ensure they are allocated to the correct accounts.
Please don't hesitate to post again here if you have any other about connecting your account to QBSE. I'm always here ready to lend a hand to help. Have a good one and take care.