I had trouble connecting my bank of america acct. too.  Then I managed to get it to connect by using the app on my iphone. try that.  It would not connect on my computer.

Resolution for 'america acct issue: 'cant connect checking account' available: Yes.

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

For more information about resolving issues related to america acct in Quickbooks/QBO or to get support for the issue 'cant connect checking account', click the link below: