It is not clear what you mean by this. What “reconciliation screen?”
What edition (desktop, server, or cloud) and version number are you using?
You are just looking at “breadcrumbs” that show the links you followed to arrive at the page you are viewing. Think of this as a miniature browser history. In this case, the breadcrumbs show that you clicked on the Bank Reconciliations tab, then a bank reconciliation, then arrived at the Transactions page by clicking on the discrepancy. All that is normal.
No, because there is no missing “pathway” to recover.
What you should see after clicking on a non-zero discrepancy figure is something like this:
The details will vary depending on what Manager found in terms of errors. You only described the breadcrumbs, not anything that came after. Can you post a screen shot of whatever you see after clicking on the discrepancy? More importantly, can you follow whatever instructions appeared in your case?
You do not have to. Update your software following this Guide: https://www.manager.io/guides/7116. Your data files are not in the program itself. They are stored separately in your application data folder and are called by the program when needed. See https://www.manager.io/guides/8394. As described in that Guide, the files are hidden on your Mac.
What do you mean by this? If the application shows in your Applications folder, your Mac knows where it is. There is nothing to find. Are you referring to finding your business data file? Techniques for doing that are in the Guide I linked above. But you don’t need to find it unless you plan to do something with it. Backups should be made to somewhere else. And you don’t need to do anything with your data file before updating your version of Manager.