See link below. QuickBooks is aware of the us dye with Checkfree.

https://community.intuit.com/announcements/1502721

Resolution for 'Checkfree issue: 'quickbooks online banking receiving error message ol-203. can’t establish internet connection I am trying to use the bank feed to send payments' available: Yes.

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

For more information about resolving issues related to Checkfree in Quickbooks/QBO or to get support for the issue 'quickbooks online banking receiving error message ol-203. can’t establish internet connection I am trying to use the bank feed to send payments', click the link below: