I'm currently unable to reconnect to my PayPal account. The message I receive is that my details are incorrect, they are not. I have tried clearing my cache etc

Thanks for reaching out to us here, liam9.

We currently have an ongoing investigation about updating the PayPal bank and getting an error message "Something of your information isn’t correct. Please try again". Our engineers are working on fixing this issue as soon as possible. 

I recommend contacting our Customer Care Team. They can add your company information to the notification list, so you'll be updated once the issue is resolved.

Here are the steps:

1. Click the Help icon located in the upper right-hand corner.
2. In the Help window, click the Contact Us button located at the bottom.
3. Enter your question and click Let's talk.
4. Choose either Start a chat or Call us.

If you have the new QuickBooks Assistant help update, you can follow these steps:

1. In your QuickBooks Online account, go to the Help > Assistant.
2. Type Talk to a human and proceed with I still need a human.
3. Click the Contact us link.
4. Select either Messaging or Callback.

In the meantime, you can manually import your bank transactions by following the steps here: Manually upload transactions into QuickBooks Online.

Once the issue is resolved and you're able to update your PayPal account, you may see some duplicate transactions. What you can do is exclude them by following these steps:

1. Go to Transactions > Banking.
2. In the For review tab, put a check mark on the duplicate transactions.
3. Click the Exclude button.

Here's a sample screenshot for a visual reference:

After excluding these transactions, you can delete them in the Excluded section.

I'm also adding this article to help you match and categorize your downloaded transactions: Categorise and match online bank transactions in QuickBooks Online.

Thank you for your patience. If there's anything else you need help with your QuickBooks account, please let me know in your reply. Stay safe!