Error in the installation of Pro Sites plugins. And other...

Site Pro installed plugins. When trying to Enable the Network occurs the following error message: "Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in/home/euque460/public_html/agnde.com/wp-content/plugins/pro-sites/pro-sites-files/lib/ProSites/Module/Taxamo/lib/Taxamo/Swagger.php on line 185 "

I managed to install perfectly on localhost. But the server is experiencing this error.

In addition to the above request, also need help setting up the Plugin Pro Sites in conjunction with the New Blog Templates plugins. I was unable to create a menu or page for the user to choose the plan and the template site.

I will enable access for you.

I do not speak English. I used Google translator. You provide you support in Portuguese Brazil?