Thanks for coming by, @userbeautybynatalie.
I have some information about how you can get the access code. This code is generated by your bank for verification and safety purposes.
If you're unable to generate another code while connecting your bank to QuickBooks, I recommend contacting your bank. They can assist you with the access code.
Once you have it, you can link your account again. For details, check out this guide: Connect bank and credit card accounts to QuickBooks Online.
In case you need help with other banking tasks, click this link to go to our general banking topics with articles.
Please let me know if you still have questions or concerns. I'm more than willing to assist you. Take care and have a good one.