Turning on Troubleshooting mode in Settings allows you to take a screenshot anywhere in the app where there's a problem, and to send a problem report to Racefully Support. The problem report will contain information about your phone, and logs of the actions you took leading up to the problem, that can help us diagnose issues.
We don't recommend leaving Troubleshooting mode turned on for longer than it takes to catch and report a problem, as the additional logging can slow the performance of the app.