Global Site Search won't search Product pages in MarketPress No2

I have serious problem and I would like your help please!

I install "Global Site Search" (version 2.1.1) to a wordpress multisite and I cannot use it, to search products from Marketpress.

On the screen shot, you can see that there is not option for the products.

I also install post indexer 3.0.2 and you can see that the products are in the indexer.

Please help me, what should I do?

PS: The reason I open a new thread, is because I follow the instructions from other stuff member here (https://premium.wpmudev.org/forums/topic/is-there-any-support-for-the-global-site-search-plugin)