Allow me to help you access the Reconcile window.
Let’s start with clearing your browser’s cache. There are times the cache takes up too much space, which can cause unexpected behavior on your end.
Here’s an article for the steps:
Resolution for 'Add comment button issue: 'Can not go to reconcile, any other tool are working. Please help' available: Yes.
The Add comment button 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 Add comment button issue yourself by looking for a resolution described in the article. If it is a complex Add comment button issue or you are unable to solve the issue, you may contact us by clicking here or by using other Add comment button support options.
For more information about resolving issues related to Add comment button in Quickbooks/QBO or to get support for the issue 'Can not go to reconcile, any other tool are working. Please help', click the link below: