I am very surprised that you don’t know that even if all entries have been deleted, the entry id continues from the last one. For example if you submit 3 entries they will have id’s of 1,2,3. Then you delete all of them and the next form you submit receives entry_id=4.
It was just to make sure they’re all deleted. Now, you can follow this link here on how to restart the count. The most easiest way, through phpmyadmin, is in the operations section for the table, changing auto_increment to 1. There’s a screenshot in the 4th answer on the link.
Regards,
Félix
This reply was modified 7 years, 4 months ago by support.