See if the article below on banking errors helps.  If not, you may have to wait until tomorrow and call Intuit.

https://community.intuit.com/articles/1145508

https://community.intuit.com/articles/1501199-troubleshoot-bank-feeds-issues-and-errors-including-ol…

Resolution for 'banking errors helps issue: 'Quickbooks is not connecting to my bank account (error 180)' available: Yes.

The banking errors helps 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 banking errors helps issue yourself by looking for a resolution described in the article. If it is a complex banking errors helps issue or you are unable to solve the issue, you may contact us by clicking here or by using other banking errors helps support options.

For more information about resolving issues related to banking errors helps in Quickbooks/QBO or to get support for the issue 'Quickbooks is not connecting to my bank account (error 180)', click the link below: