I am missing the last 109 submissions on my google spreadsheet

All submissions came in last night. The last integrated submission was at 2017-03-21 at 05:14:09.

You can try first redoing the integration process. That is remove the integration, save your form, and integrate again to Google spreadsheet.

All existing submission data of the form will be reflected on the spreadsheet through the integration.

Let us know if this did not work.