Can't tell from what you posted. Could you provide some info? What version of JMP, which OS, and perhaps screen shots or the journal of the analysis you performed.
I wonder if your Excel file is larger than 95 Mb which is the maximum attachment size allowed on the JMP Forum.
Otherwise, If you use the "Reply" (not "Quick Reply"), you should see the following display at the bottom of the page:
But I assume that is what you did in your prior attempts so there might be something wrong with your file and/or the JMP Forum.
Can you tell us which version of JMP Genomics you are using? Look under Help>About JMP
Also, try uploading the file as a .csv