Hello,
Firstly, what error do you have in the console http://prntscr.com/j13dfr ? Did you try to clear your browser cache and try again? If yes, you also may comment this line http://prntscr.com/j13e1a > https://prnt.sc/j13ey7 (legenda/framework/import file) and check if the content will be imported, but in this case, the slider should be imported using file (we sent it to your registration email).
Regards