Telegram webhook doesn't connect to my server with selfsigned certificate - ruby

Question

Have the issue that Telegram webhook doesn't connect to my server with selfsigned cert(no any connections in logs from telegram API). Any ideas?
Configuration:
CERT=config/ssl/production/cert.pem
Telegram.bot.get_webhook_info
{"ok"=>true,
"result"=>
{"url"=>"https://<IP>/telegram/NY71J1pPAzfGCf90Fc-Ssybo",
"has_custom_certificate"=>true,
"pending_update_count"=>1,
"last_error_date"=>1674396736,
"last_error_message"=>"Connection timed out",
"max_connections"=>40,
"ip_address"=>"<IP>"}}
Rails.application.routes.url_helpers.telegram_webhook_url
=> "https://<IP>/telegram/NY71J1pPAzfGCf90Fc-Ssybo"
Puma started with nginx:
sm_app | => Booting Puma
sm_app | => Rails 7.0.4 application starting in production
sm_app | => Run `bin/rails server --help` for more startup options
sm_app | Puma starting in single mode...
sm_app | * Puma version: 6.0.2 (ruby 3.2.0-p0) ("Sunflower")
sm_app | * Min threads: 5
sm_app | * Max threads: 5
sm_app | * Environment: production
sm_app | * PID: 1
sm_app | * Listening on ssl://0.0.0.0:3000?cert=config%2Fssl%2Fproduction%2Fcert.pem&key=config%2Fssl%2Fproduction%2Fkey.pem&verify_mode=none
upstream sm_app {
server 'sm_app:3000';
}
server {
listen 80;
server_name _;
return 301 https://sm_app$request_uri;
}
server {
listen 443 ssl;
client_max_body_size 100m;
keepalive_timeout 5;
root $APP_PATH/public;
access_log $APP_PATH/log/nginx.ssl.access.log;
error_log $APP_PATH/log/nginx.ssl.error.log info;
ssl_certificate $APP_PATH/ssl/cert.pem;
ssl_certificate_key $APP_PATH/ssl/key.pem;
ssl on;
ssl_protocols TLSv1.2;
location / {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_pass https://sm_app;
}
}
root#11941b39b560:/app/log# cat nginx.ssl.access.log
root#11941b39b560:/app/log#
I've tested these configurations:
https://core.telegram.org/bots/webhooks
https://core.telegram.org/bots/self-signed (part of the previous one)
telegram-bot-rb/telegram_bot_app#7 (comment)
I tried to make a direct request from my local computer from different countries (using VPN) to the bot server(postman request example below).
All this time I got the status 200, and the bot processed this request and sent me a message, as expected.