I am sorry, we do not have Russian/Cyrillic speaking or reading supporters in Toolset.
We have someone over at WPML but he will be back only Monday.
Meanwhile hence I translated your post with google translate, which might be imprecise.
Please apologise if so.
I understand that you want to: install plugin (установить плагин)
You expected: Working installed plugin (РАБОТАЮЩИЙ УСТАНОВЛЕННЫЙ ПЛАГИН)
Instead, you got an error:
Request Entity Too Large
The requested resource
/wp-admin/update.php
does not allow request data with POST requests, or the amount of data provided in the request exceeds the capacity limit.
СÑÑ'Ð"ка, по коÑ'орой вÑ' перешÐ"и, уÑÑ'ареÐ"а.
ПожаÐ"уйÑÑ'а, попробуйÑ'е ещÑ' раз.
Now, the error is encoded here so I cannot tell exactly what it is but this looks like a server issue.
Please try this:
1. Delete all Toolset plugins from your server (Удалить все плагины Toolset с вашего сервера)
2. Download new Toolset Plugins from here https://toolset.com/account/downloads/ (Загрузите новые плагины Toolset здесь https://toolset.com/account/downloads/)
3. Upload those to your wp-content Folder in your FTP (or thru the WordPress Admin > Add Plugin > Upload) (Загрузите их в свою папку wp-content на вашем FTP (или через WordPress Admin> Добавить плагин> Загрузить))
4. Activate them (Активировать их)
More instructions about a manual install can be found here:
https://toolset.com/faq/how-to-install-and-register-toolset/#manual-installation-if-you-dont-have-types-plugin
If you cannot understand my instructions, or I misunderstood your report, please wait until Tuesday when I am back, so I can involve my Russian Speaking colleague. (Если вы не можете понять мои инструкции или я неправильно понял ваш отчет, пожалуйста, подождите до вторника, когда я вернусь, чтобы я мог привлечь моего русскоговорящего коллегу.)
Thank you.
PS, more details here as well:
https://toolset.com/forums/topic/i-am-trying-to-install-3-2-7-but-when-i-try-to-install-i-get-this-error/#post-1226642