MS Forms missing data

Hi All, 

I don't know if my question has already been answered as I have not seen anything related to my question. 

So I have a lot of Identical Forms catering different locations. One of these forms encountered a problem. The excel response does not show/reflect the encoded entries. The MS forms shows no problems as well as my MS Flow. Then after I sync the responses to a new excel sheet, the missing entries are there. 

Maybe I am doing something wrong with my forms.

Note: the forms consist of a lot of questions. could this be the problem?

Hope you can help me with this dilemma.

Thank you in advanced