Reliability Monitor shows that Manager is installed properly. You have version 17.7.44 installed. The latest version is 17.7.57, but I don’t think the problem is with Manager. Since there are no error reports for Manager we should assume the problem is something else.
I would try running “Error checking”, then “Optimize and defrangment”, and finally “System File check”. Your first priority though should be to make sure your data is safe. Do a backup of your business and save the file on a separate drive or on a Cloud service.
To run “Error checking” and “Optimize and defragment”, open Windows Explorer, right-click on your C drive, click properties, then click the Tools tab.