Kounta and MYOB are aware of the issue, this seems to be a security precautionary by MYOB. So you need to issue a link between MYOB and Kounta again as the Credentials are invalid.

 

To fix that, do the following:

  1. Go to Kounta's Back Office -> Add-ons -> MYOB AccountRight -> Connections tab -> click Restore Connection button -> click "Connect to MYOB AccountRight"
  2. Type MYOB email address and MYOB password with admin rights then click on "Allow access"
  3. Select the MYOB AR Live company file from the drop down, then type the username as Administrator with blank password then click Connect to MYOB AccountRight

  4. go to Sync tab and issue Sync Now