Why do I see more app installs than install clicks?

There are cases when there are more installs than install clicks (conversion rate>100%).

How is this possible?

•  Bypassing the app store page. We receive and present install click events from GA covering the Shopify app store page (via BigQuery). Some app developers use smart links or other means to bypass the app store page and use Shopify oAuth to go straight to the install screen in some flows. In such cases, there is no install click event (or visit) in GA although there are app installs.
• Multiple installs across different stores. Merchants with numerous stores may install your app across several stores in a single session: One install click can lead to multiple installs.
• Missing Google Analytics events. Some install click events may be missed by Google Analytics.