Are you sure the Residue Interaction Energy filter is enabled? Because I see lots of Tryptophans in my solution.
Below your score there should be an arrow plus something that says "No bonuses, no penalties., all conditions met" (ignore the mis-punctuation) and click on the arrow.
You can click "Show" to see where (if any) of your residues are not scoring well through the Residue IE filter.
If you upload a screenshot I can try to explain any seemingly odd behavior (or more likely I will ask one of the scientists).
There is nothing that shows and there are no penalties either. The message in blue says "Residue IE Score met(REQUIRED)
I have 11 Tryptophans in my solution so far.
Sorry no facility to upload a screenshot here (unlike the feedback pages).