Hello, (Reduce OIL LEVEL)

I just purchased my first Mercedes, a 2020 c300 4matic. I have already started to have a few concerns about this car. First, right off the lot, the hood alarm starting blaring out, (so loud) I had no idea what it was telling me. I immediately drove it back to dealership and the saleman did not know much about it - but i guess his pushing down on hood secured it, and the alarm stopped. (relief)

Second, the next day I went back to dealership to finalize the sale, and just as getting to the lot, a warning come on my dash saying "REDUCE OIL LEVEL". I showed it to saleman, he took it to the service dept and they told me it was just needing to be reset, no a problem.

Third day (yesterday) that same warning came on and even though the service dept was closed I drove it back to dealership. They checked the dash and told me the oil level was okay? But to come back Monday (tomorrow) and let them put it on computer to see why that warning is coming back.

On the way home, the "tire pressure warning came on" saying my two front tires were at 33 and they should be at 38? I will deal with that at service dept tomorrow too.

Just a few minutes ago, I went out to check the oil pressure, and it is show over the Max level? I will put a photo up if I can figure out how.

This all has me very concerned? They told me twice the oil pressure was fine? I am at a total loss. Not even sure what to ask you all? Just very concerned.

took this today (dec 17th)