Let me know if it keeps happening every week. It’s possible it does that for the first week because it tries to send the previous finished week’s report.
The same happened this week, 17-23 March on Monday, 24-30 March on Tuesday. However I did delete all the reports mid last week and re enter them to see if that was the problem so if your suggestion is right that would explain this weeks double report.
I will report back next week to see if the reports return to one per week.