Go to file>utilities>verify. Sounds like you may have some data file damage. If it tells you to rebuild, rebuild. Then verify again to be sure it is fixed.
Resolution for 'Cleared checks issue: 'Cleared checks show in reconcillation as uncleared' available: Yes.
The Cleared checks 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 Cleared checks issue yourself by looking for a resolution described in the article. If it is a complex Cleared checks issue or you are unable to solve the issue, you may contact us by clicking here or by using other Cleared checks support options.
For more information about resolving issues related to Cleared checks in Quickbooks/QBO or to get support for the issue 'Cleared checks show in reconcillation as uncleared', click the link below: