BuddyPress.org

If you think you’ve found a bug in 2.3.3, you can submit a ticket here.
Be sure to include some screenshots.

the column on the right are added profile fields, you can remove the field from the admin

more info on profile fields https://codex.buddypress.org/administrator-guide/extended-profiles/

BuddyPress and WP do not have two usernames. Is this the BuddyPress registration form or another form by a plugin?

You think right. BuddyPress need this field to sync with WordPress.
It’s really confusing for the user to set the username twice.
And what about entering password twice ?

Read from here:
https://buddypress.org/support/topic/hide-the-username-and-display-firstnamelastname/

the pages go directly to groups/name_group/forum, so i have a not found error

Let’s think that you set up forum wrong. Verify your bbPress settings. Or that you added some bbPress shortcodes to the BP group page.

Installing Group and Sitewide Forums

On a correct install of BP/bbP, if a group has a forum, it is because the group creator activated it.

As site admin, go to the group management on front-end and deactivate the forum.

or/and

If you don’t want forum for groups, simply deactivate this option in bbPress settings.
Deactivate also Allow users to create forums in BuddyPress settings.

Yes ! You need to use template overload, then you can remove that part from the template.
While creating a new group:
See bp-templates/bp-legacy/buddypress/groups/create.php
While modifying a group:
bp-templates/bp-legacy/buddypress/groups/single/admin.php

Caution: if you do this, you can only use public or private groups. Hidden groups are “invite users” only.

It is standard! At least if you use xprofile component to let your users enter their signature.

1) Create a new field. Call it Signature and give it a textarea type.
2) Once this field is edited by a user, during registration or later, the signature appears on his profile.

3) if you want this field somewhere else, for ex on the profile header, you simply write a function to call this field and hook it into the template you want.

Ie. Add this to child theme functions.php or bp-custom.php

function my_signature() {	
if ( bp_is_active( 'xprofile' ) )
   if ( $signature = xprofile_get_field_data( 'Signature', bp_get_member_user_id() ) ) : // field name; case sensitive				
      echo $signature;	
   endif;
}
add_filter( 'bp_before_member_header_meta', 'my_signature' );

Or to use Henry’s advice
add_filter( 'bp_after_profile_content', 'my_signature' );

Reference

User Extended Profiles

Displaying Extended Profile Fields on Member Profiles

Check the translation file: buddypress_CN.po (with a text editor like Notepad++) and verify that email text are all in plain text. Those strings shouldn’t contain any html entities.

Read from here for more details about email customization:
https://buddypress.org/support/topic/customizing-emails-template/
https://buddypress.org/support/topic/registration-process/

Please give details about your config: theme, plugin list.
https://buddypress.org/support/topic/when-asking-for-support-2/

On a default install, there are no restriction for visitors to see all profiles.
Have you tested without captcha plugin ?
Do you use a cache ?
While testing after been connected as admin, it’s important to ensure that your brower history & cookies are cleared.

If you use Dan’s approach, you want to do it by first making a template overload of the file he links to. And then writing a conditional for the calls to the user link. It will work fine.

Or you can use the filter hook for bp_activity_user_link() and then you don’t need to touch template files. You could write a filter in theme/functions.php – something like:

function imborx_profile_link( $link ) {

   if( $link != bp_loggedin_user_domain() )
       $link = // custom url

   return $link; 
}
add_filter( 'bp_get_activity_user_link', 'imborx_profile_link', 15, 1 );

See template entry.php

https://buddypress.trac.wordpress.org/browser/tags/2.3.3/src/bp-templates/bp-legacy/buddypress/activity/entry.php

Caution: modification are preferably done via child-theme.

BuddyPress and bbPress are different plugins.
bbPress has it own spport forums.
In wp-admin, under Settings, you should links for: BuddyPress, Forums
In wp-admin, in the main nav column, you should see links for: Forums, Topics, Replies
There is no path ‘…/bb-admin’

That plugin completely crashed my site

Ouch!

The developer of that particular plugin is a BuddyPress core developer so if you open an issue on the plugin’s GitHub repo, he should be able to help 🙂

You’d need a plugin for this. Check out BuddyPress Reply By Email.

“when user reply or comment on any post” – when I hear that I think of replying to a post in wordpress language, which is a chrono blog post, and not a ‘static “page” ‘ – however I am going to assume you mean replying in the various comment reply places all throughout buddypress; like activity comments, group updates, etc.

I am confused by what you are saying, but it’s only becuase I have no clue about how any of these things work. I’m still trying to learn php and then going to try to learn how wp and bp actually works – and that looks like it’s gonna take a long time.

However now that you have provided some details I am sure one of the much smarter people around here will be able to guide you in the right direction.

@ajaysingh-1
man – there is post_comment, post_update – and a bunch of others on the hookr io page
http://hookr.io/plugins/buddypress/#index=a

not sure what you mean post button comment section..
hmm.. section on the site-wide activity page?
via private message emails / replies?

hmm.. group replies?

I don’t know anything about the functions and code actually – but hopefully the hookr info will help ya, or this comment will help you detail what exactly you are looking for – so if someone does know about this code they will know more about what you mean..