I want to make sure you can connect your Tide account in QuickBooks Online, userlakesgardeners.
May I asked what specific issue you're getting while trying to connect your account? In the meantime, you might want to check your bank's website if they're having maintenance updates.
Once signed in, copy its URL. Then, paste it in the Connect an account window's search box. This will let you log in to your correct bank.
Here's how:
Go to the Banking menu.
Select the Add account button.
Past your bank's URL in the Connect an account search box (example: http://www.chase.com).
Enter your User ID or Email and Password.
Click Continue.
Follow the steps to successfully connect your bank.
After that, QuickBooks will automatically download your most recent transactions. To help you manage and categorise your bank transactions, see these articles for your reference: