Stream Deck has two actions for Twitter which may no longer work due to recent changes in Twitter's (Now known as 'X') API.
Update: X actions were removed in Stream Deck 6.4.
Elgato will be removing the Twitter actions in an upcoming Stream Deck software update while investigating the possibility of allowing posts on X through Stream Deck.
Until that time, the actions will be visible in Stream Deck however won't function as expected.
Due to X's API changes Elgato cannot guarantee that these actions will return.