My form is integrated with google docs but the spreadsheet is not populating

I have integrated my form with google spreadsheet. The submissions are showing up only after the spreadsheet disabling and re-integration. I'm a rather long-term JotForm user, everything worked correctly but some months ago such a problem arose. Is there anything I can do to fix it and have my submissions integrated automatically?

Hello LeoLing,

We apologize for this inconvenience.

Is this problem consistently happening or is this intermittent to some submissions only? I also have tried to push some to Google Spreadsheet. Can you check if the missing submissions are there now? 

Please try to observe your next coming submissions as well if the problem persists.

Thanks.