Compatibility page white

Good morning,
I'm doing the free trial period. I'm trying to install courspress and Marketpress theme of divi elegantheme. When I add Marketpress the site go in white page. Evidently there is a compatibility problem. Is there anything I can do to fix this? The site is http://www.evergreenteam.it my email on WPMU dev is onofriozummo@gmail.com.
Thanks to the availability Yours
Onofrio Zummo