It sounds like there might be a conflict or a setting causing the timer issue between LearnPress and the QSM quiz plugin. This can often happen with shortcodes or specific quiz settings.
A good first step is to double-check the timer settings within the QSM quiz setup and ensure no caching plugins are interfering. Sometimes, clearing your site and browser cache can resolve display issues like this.
For more detailed troubleshooting on plugin conflicts and setup, you might find some helpful guides on Yono Hot Rummy.