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What's next basically depends on your particular problem. In our case, it seems that the shape of the light curve is way off. The parameters which influence the light curve shape the most are Kopal potentials, so let us try and fit those. Go to the System-related tab and mark both primary and secondary star potentials (PHSV, PCSV) to be adjusted. Go to the Fitting tab and do as before: correct the values of potentials one step at the time. Note that the convergence is slower than for the luminosities, but be patient and keep going until you have reached satisfactory values. A piece of advice: keep a plotting window open and inspect what each iteration does to your synthetic light curve!
If you have followed the above scheme, you should have landed with the primary and secondary potential values of 4.878 and 4.686, respectively. We now see how way off we have been with our calculated values. You may play with the values in the potential calculation window to see what presumption was wrong. The corrected values produce the following for both light curves:
This is much better already!
... TO BE CONTINUED ...