The glide editor might have a glitch… since is visualizing codes and executions… try to refresh, in most cases the live app will work as is intended to work
If you are using Google Sheet, and only see 10 rows, the most likely reason is you have another tab on that Google Sheet that is also attached to the App and is being used, and you are exceeding the row count for your particular plan (Paid, Free, etc.). The total row limit for an App for all sheets on the free plan is 500. If you have 501 rows, you will only see 10 rows on any particular sheet you are viewing from the Glide side.