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Contact information is in prior topics, including here Upload data error -- at huttenhower.sph.harvard.edu/galaxy/ - #7 by jennaj
That said, it looks like you are attempting to paste file data directly. Try putting that text into a plain text file and load that file instead. I’m guessing that server does not support direct text pasting – or that you need to use the option under Settings to convert all whitespace to tabs.
Use auto-detect for the file type is also usually best. If Galaxy guesses the wrong datatype, there might be something to fix.
Maybe test more and see which works? Then contact the other admins if you need more help – there could be a server issue.