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I have checked your form and your integration and it seems good, I also have integrated a cloned form of yours and I'm receiving the data normally.
Please, do not make changes on the spreadsheet that is integrated with your form, this may break the integration.
Also, try re-integrating your form with Google Spreadsheet again, it should fix the issue in case that there is one.
Do let us know here if it helps.
thank you for getting back to me