Hello there.

It's great to hear that you're no longer getting new suppliers when updating your bank in QuickBooks Online (QBO). Upon checking on our system, it's good to confirm the news that the issue is indeed closed and resolved by our product engineers. 

Moreover, I'll also share this link where you can search for articles that can serve as your reference to help you manage your QBO account: QuickBooks Online Help Articles.

 Feel free to leave a reply if you have additional QuickBooks-related queries. The Community team always has your back. Have a good one.