Oh, I feel your pain.  It sometimes opens up behind the program, so minimize it, you will see the box.

Resolution for 'Convert QBO issue: 'Convert QBO to Desktop – no Sec Cert' available: Yes.

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

For more information about resolving issues related to Convert QBO in Quickbooks/QBO or to get support for the issue 'Convert QBO to Desktop – no Sec Cert', click the link below: