Signal is blocked in several countries but you can set up a proxy server to help people access Signal no matter where they live. Here’s how:

https://signal.org/blog/proxy-please

Thank you for helping keep Signal available for everyone who needs it.

To share your proxies use #SignalProxy

Proxy Please: Help People Connect to Signal

Several countries have recently blocked Signal, leaving their residents without a trusted and safe place to communicate. To help in this situation, Signal provides a built-in censorship circumvention feature and also includes support for a simple TLS proxy that can bypass these blocks in many cir...

Signal Messenger

@signalapp The Russian state has blocked Signal, but the so-called "safe" Telegram is free to operate

https://www.themoscowtimes.com/2021/09/18/telegram-messenger-blocks-navalny-bot-during-russian-election-a75079

Telegram Messenger Blocks Navalny Bot During Russian Election

Jailed Kremlin critic Alexei Navalny's "Smart Voting" bot has disappeared from the Telegram messenger app following similar moves by Apple and Google on Friday at the start of a three-day parliamentary vote in Russia.

The Moscow Times