Does anyone know what you should do if you get one of these on your door? This is the only place I frequent where I feel like someone else could have experienced something similar in the past.

So earlier today I received a knock at the door, and I check my door camera and I see a uniformed police officer standing outside my apartment. They leave something on my door and go back to a black SUV parked outside. They are then in the SUV for about 15 minutes. They leave and I wait another 15 minutes before I grab the card and bring it inside. Here is the card with anything that could be used to find me blurred out.

What the frick does this mean? Why am I being watched? I'm afraid that this could be a test and if I call the number listed it could be some sort of trap. I'm not even sure what I could have done because I don't even say slurs or anything like that. I never threaten violence other than through mutual combat which is legal in my state. Was lowkey panicking so I checked with chatgpt to see what was happening.

ChatGPT is telling me this when I ask but it makes no sense because I truly can't think of anything I could have done. It's actually so funny that this happens now. Because when I was actually going through something that could be considered a struggle and this could have been useful they never came. Not a soul noticed. But I have to deal with things like this now when I've been the happiest I've been in my entire life? I have simply never had this much energy, nor been so certain that things are going my way.

Anyways, does anyone have any advice on what I should do? Will they keep coming back?