blank members template on The Business theme AGAIN

Hi, i ASKED YOU -there is always a blank page when I choose Members template on my BuddyPress theme. I've tried different pages and the result is always same. When I give the option - Member Template - after clicking the preview the webpage goes blank. What am I doing wrong?-/https://premium.wpmudev.org/forums/topic/blank-members-template-on-the-business-theme#post-823200/
AND YOU ASKED FOR A Support Access to my site, which I did immediately but no one used this access/ which already finish/ neither answered my problem.
Please, again, could you help me, what I've done wrong?