Free Trial?

DBD original Killers and Survivors were supposed to be on free trial for the entirety of the event, and as a newer player I was eager to try out some new killers and perks of the new survivors so I know who to get before the event is over. They were only on trial for the first day and then were taken off. What's going on?

https://preview.redd.it/1jfb8is2njaf1.png?width=1376&format=png&auto=webp&s=c40b91c20d9180eb3811ee38027d1a8a8ac3139b