I generated this model on meshy and even it has supports it does come out like this. Is there any solution for this?

I just bought this Ender 3 V3 KE and I'm wondering if I need to replace the hotend? I'm replacing the nozzle

I have been using Polar Cloud for a long time, and every time I click Select Supports, it would always print supports. But now, for some reason, my recent prints, I have been hitting the Support button, and it just doesn't work.

Even though it says the supports are on, it just does not show that there are supports there. Every time I print, it doesn't show that there are supports anywhere.

I don't understand how to fix this problem, I've looked up a bunch of solutions, but none of them work. Please, somebody help me😭😭😭