How to block all users from deleting their messages?

what did you already tried?

I’ve unchecked these options but to no effect.

Allow users to delete messages
Allow users to delete their messages only

Disable additional security check when deleting thread
Check this if you have issue with thread deleting

I don’t want any user to delete a thread

I think if i can remove this “cross” button, then my problem will be solved, is there a way to do so?
screenshot

hide it with CSS

.bp-messages-wrap .threads-list .thread .time .delete{
display: none !important;
}

Thank you so much!
I managed to get the same result but that was by editing the plugin,
I commented out this line in assets>functions.php
<span class="delete" data-nonce="<?php echo wp_create_nonce( 'delete_' . $thread->thread_id ); ?>"><i class="fas fa-times" aria-hidden="true"></i></span>

But this will be replaced after the update right?

yes

I have another question, I hope this thread is suitable for it as well,

Q. why can’t we send messages privately to registered users on the site without installing buddypress. I’m only using BuddyPress for this sole reason. otherwise i would have only opted to use BP

you can send messages privately without buddypress

i tried it, but i was unable to, can you please guide me towards such documentation/tutorial?

https://www.wordplus.org/knowledge-base/how-to-create-group-threads/

Look at that video, hope it gives you the idea.

Hi there,

I confirm that despite there is a css fix for this, unchecking :
Allow users to delete messages (Allow users to delete their messages only)
is not disabling the users’ ability to delete their discussions threads.
Test with version 1.9.8.60 free.

GB

Indeed, we will really appreciate that if it starts working.

That option is response for messages deletion, not threads.

You want to restrict your users from deleting threads?