QB Issue Resolution:

Hi, mel

Bank errors certainly are frustrating.

A 101 error is one that usually requires calling in to have a phone agent help investigate.
To contact QuickBooks Online Customer Care, sign in to your company and click the “?” (Help) > type Support > click More Support Options > click Contact Us > click Call.

Resolution for Issue 'Why won’t my bank account linkup?' available: Yes (Solved).
Source: Intuit Community forum.

Why won’t my bank account linkup?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for error code
Quickbooks Repair Pro will resolve it efficiently and affordably. Guaranteed resolution of your issue, or you pay nothing!

Error Recovery for error code [Canada]
E-Tech is the #1 Quickbooks data migration and Conversion service provider.

Get 50% off Quickbooks Online

Click Here for 50% off!

Additional Support Options: