BuddyPress.org

Hi @bastianernst

guess you made some mistake while activating BuddyPress and using your theme. Probably you have also some other plugins in use ?

So, aside from reading absolutely throuhg the install BP documentation, i strongly recommand that you check the site fonctionnalities by using only:

WP+BP+Twenty Sixteen theme. No other plugin, no custom code.

If you allowed registration, you have a login widget (the one coming with WP) you can activate in the sidebar. Do this for testing the password change (click on lost password ?) once active.

Also on the basic install, you should have all BP menus in the usermenu (top right corner) and on a user profile.

Once anything ok on this install, upload BP Default Data plugin and activate it. This will add fake datas in all parts of BP, so you have content everywhere that let you test completely the site.

Go through and see how it works.

If all seems ok, you can then activate the final theme. Simply remind that BP pages should be empty, without any content or template model.
Don’t forget to set up pretty permalinks (whatever but by default) and with a little luck, you’ll be on the right path.