The missing emote happened around 12:00:00 (UTC+01:00), I first noticed it in the ScrapTF chat when it only displayed text. In any other place on ScrapTF is displays the emote :missing: instead of the :csdsmile: emote.
The triggers not working in the ScrapTF chat happened around 12:20:00 (UTC+01:00) after I deleted all browser cookies to see if it would fix the :csdsmile: emote problem. After I found out it didn't work, I noticed all the chat settings were gone because I deleted all browser cookies, so I put the triggers, the trigger noise and set all the settings back, but it stopped triggering when a trigger word was said.
The only possible solutions I could think of were deleting all browser cookies which caused more problems than what it solved, and restarting my computer which also didn't work. I seem to not be the only one who has this problem on ScrapTF, as I made a raffle asking if anyone knows a solution and two other people said that they also have the same problem.