I think most of these posts are old, you can see here: https://snort.social/search/The%20next%20round%20of%20Trivia%20Masters%20(beta)%20by%20%23%5B0%5D%20will%20begin%20in%201%20minute.%20Get%20yourself%20ready!%20Keeping%20the%20rewards%20lower%20until%20the%20kinks%20are%20worked%20out.%20The%20first%20correct%20answer%20will%20win%2010%20sats%20and%20a%20consolation%20prize%20of%203%20sats%20will%20be%20given%20to%20one%20other%20random%20participant.%20All%20bots%20will%20be%20disqualified.%20%23trivia%20%23plebchain

You might need to delete a char and add it back to refresh the screen if you don't see any posts.

The account is probably not in the spam folder until people go to the profile and the last 1000 messages are loaded. That's when all the duplications come and the app goes nuts.