“We’re aware of reports that access to Signal has been blocked in some countries,” Signal says. If you are affected by the blocks, the company recommends turning on its censorship circumvention feature. (NetBlocks reports that this feature lets Signal “remain usable” in Russia.)
They are refering to the crypto payment option that was build into the messenger a while back. Never used it and it never bothered anyone. It just isnt very well recieved as a feature in a secure messenger.