Cherry Tree interface language does not change

I assume that you (again) have created a question in the wrong area.
"Launchpad itself" is the project of the Launchpad hosting services, running the platform where this question is stored.

I assume that your question deals with cherrytree when run on an Ubuntu system. Consequently I move the question there.

Which Ubuntu release are you running, and from which source have you installed cherrytree?

The highest version available in the Ubuntu repositories in 0.99.48

What is the output of the commands

uname -a
lsb_release -crid
apt policy cherrytree

vibeg@vibeg-MS-7A36:~$ uname -a
Linux vibeg-MS-7A36 5.15.0-56-generic #62-Ubuntu SMP Tue Nov 22 19:54:14 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
vibeg@vibeg-MS-7A36:~$ lsb_release -crid
Distributor ID: Ubuntu
Description: Ubuntu 22.04.1 LTS
Release: 22.04
Codename: jammy
vibeg@vibeg-MS-7A36:~$ apt policy cherrytree
cherrytree:
 Installed: (missing)
   Candidate: 0.99.43+dfsg-1build1
   Version table:
      0.99.43+dfsg-1build1 500
         500 http://archive.ubuntu.com/ubuntu jammy/universe amd64 Packages
https://cyber-x.ru/%D1%83%D1%81%D1%82%D0%B0%D0%BD%D0%B0%D0%B2%D0%BB%D0%B8%D0%B2%D0%B0%D0%B5%D0%BC-%D1%83%D1%82%D0%B8%D0%BB%D0%B8%D1%82%D1%83-%D0%B4%D0%BB%D1%8F-%D0%B7%D0%B0%D0%BC%D0%B5%D1%82%D0%BE%D0%BA-cherrytree/

If you have installed a version from a foreign source (here: cyber-x.ru) and if that version does not work correctly, then please ask at that foreign source.

Does the Ubuntu-provided version ( 0.99.43+dfsg-1build1) work correctly?

yes. except for the language function of the interface, everything is in English, but I need Russian or Ukrainian. I changed the language in the settings, the message was that it would enter after the restart, but nothing has changed

I decided, first I deleted everything, then I installed version 0.99.43 via Synaptic, everything works, thanks

Thanks Manfred Hampl, that solved my question.