My connection has expired with my credit card, tried reconnecting for 2 weeks using the app and logging in on the website through my iPhone, any ideas?

I appreciate the effort you've put into handling the banking error 480 that you've encountered, Completely.
 

Once you contact our live support team, they will keep you notified via email of any progress related to your reported concern. If you haven't received any updates yet, you can reconnect with them to follow up on its status.

Here how:

1. Access this link: Contact QuickBooks Live Support Team.
2. Select QuickBooks Self-Employed from the product selection dropdown.
3. Click Confirm.
4. Enter your query in the designated field. Then, Continue.
5. Follow the on-screen instructions to sign in to your account and connect with our available experts.

Please note that any problems our live agents are working on can only be handled by them using their specialized tools. Reaching out to them ensures you can gather more insights about the issue.

I'm also including an article that can help you manage your transactions effectively on the platform: Categorise transactions in QuickBooks Self-Employed.

Please let us know if you have other concerns by adding a reply to this thread.