New messages notifications

There are 2 existing notifications on site.

1) Privatemsg Block with new messages counter

2) Privatemsg menu item to Account menu

Please try it

I must be really dumb, as I can't find either.
Could you please provide steps/paths to access these elements/functions?

How to place a block https://www.drupal.org/docs/user_guide/en/block-place.html →

"Account" menu also places as block

Thank you. Of course I know how to place a block. The problem is that "Privatemsg Block" is not listed among the available blocks, and so - no way to place it.

Do you use the last version?

Block Account menu:

Very strange. I have just reinstalled the latest version, but the Private Messages block is still not listed among the available blocks...

Try the clean Drupal instance.