Found by @twitaculous

This is a competition from Adaptainer Login To Enter »

Guess the container number - win a £10 Gift Card ARMU400 _ _ _ Simply guess what the three digits are to be entered. If two people guess the same number the earlier guesser will win. The closest guess will win. *Ends Friday 28th February 2020 at noon*

Sometimes promoters tweet more than once.
Tweets will only get updated when you re-fetch them. This helps you because competitions will no longer "jump" between pages when competitions get added or competitions finish while you are browsing them. Competitions get "fetched" when you login or manually re-fetch them with "Forget Ended Competitions & Fetch New Ones". Additionally hidden tweets will stay visible until you "fetch" to save reloading the page and save you from losing your position.