side bar Buddypress corporate is not showing all widgets

Hi,
Please could you help me, I do not know if it is a problem of the theme or somthing else. Theme buddypress corporate.

Half a year ago I could drop widgets in the right sidebar of pages and so on. Then only the menu widget became unstable. Now with all the latest updates only one widget (text) is showing up in the right sidebar. Menu widget is visable on the homepage right bar, but in pages, groups, members not menu and more widgets, calendar, groups are not visable.

For the use and functionality of the web side more widgets are needed, in the dashboard the widgets are on the right place, but not visable on the website.

Hope you can help me, kind regards of Anne