Error in importing excel file

I am trying to import an excel sheet through import.jotform.io, and there is always an error saying "File uploaded is too large. Consider splitting your data into multiple spreadsheet files." In fact, even if I cut almost everything and keep just 10 or so rows, it does not help.

Please, help.

Thanks,

Milan

I have responded to you on this thread https://www.jotform.com/answers/2215924. Please follow up on that thread. 

Looking forward for your response.