My drain was cleaning slowly, so I pulled out my sink stopper to fix it. Youtube said this would take 90 seconds. Which it should, if you are able to hook a pivot rod into the hole in the stopper without looking at it the first time. I wasn’t able to do it at all. I asked boyfriend, and he got it close but I don’t think it is quite right. When we put the nut back on, the sink was leaking. I told landlord. Landlord said he sent someone out. I trusted him. I finally noticed the leaking is still a problem when my tampon box was soaking wet. I pulled everything out, and there is mold under on the cabinet. I used some mold spray. The mold does not come off, but the vinyl coating on the plywood does. I don’t want to take the sink apart again and potentially make it worse.
So. Ruined cabinet, leaking sink, because I wanted my bathroom faucet to drain. Yay.
It’s not possible to break the sink and make it leak by pulling out the stopper. The only thing you could break is the stopper itself. How long ago did it start? Mold takes time to develop. Most likely the sink was improperly installed and slowly leaking this whole time, developing mold underneath. Your stopper shenanigans probably just opened up some sediment keeping it all vaguely together. Make your landlord fix the whole thing, sink, cabinet, and especially mold. It’s a serious health hazard.
Edit: rereading this, do you mean the P trap? Still, they aren’t complicated, if three people couldn’t put it back together it is fucked and probably already was fucked. Landlord problem.
The stopper. It is leaking out of the part where the nut attaches the pivot rod to the pipe. I assume this is because the pivot rod is not properly inserted into the stopper, and as such the nut is not able to screw on properly.
That’s some seriously bad design. Taking out the stopper for cleaning is normal maintenance and shouldn’t require specific skill to put back. Still, you reported it to your landlord, everything that resulted from it further is on the landlord. If you really broke it (doubtful) the landlord should have fixed it and maybe send you a bill (debatable). Leaving it broken is what caused this mess.
It can be easy to misalign the trap so it drips. Maybe this was long term, but if the upstream side were the misaligned piece it could have been a problem all along but not drip until the slow drain backed up far enough
My drain was cleaning slowly, so I pulled out my sink stopper to fix it. Youtube said this would take 90 seconds. Which it should, if you are able to hook a pivot rod into the hole in the stopper without looking at it the first time. I wasn’t able to do it at all. I asked boyfriend, and he got it close but I don’t think it is quite right. When we put the nut back on, the sink was leaking. I told landlord. Landlord said he sent someone out. I trusted him. I finally noticed the leaking is still a problem when my tampon box was soaking wet. I pulled everything out, and there is mold under on the cabinet. I used some mold spray. The mold does not come off, but the vinyl coating on the plywood does. I don’t want to take the sink apart again and potentially make it worse.
So. Ruined cabinet, leaking sink, because I wanted my bathroom faucet to drain. Yay.
It’s not possible to break the sink and make it leak by pulling out the stopper. The only thing you could break is the stopper itself. How long ago did it start? Mold takes time to develop. Most likely the sink was improperly installed and slowly leaking this whole time, developing mold underneath. Your stopper shenanigans probably just opened up some sediment keeping it all vaguely together. Make your landlord fix the whole thing, sink, cabinet, and especially mold. It’s a serious health hazard.
Edit: rereading this, do you mean the P trap? Still, they aren’t complicated, if three people couldn’t put it back together it is fucked and probably already was fucked. Landlord problem.
The stopper. It is leaking out of the part where the nut attaches the pivot rod to the pipe. I assume this is because the pivot rod is not properly inserted into the stopper, and as such the nut is not able to screw on properly.

That’s some seriously bad design. Taking out the stopper for cleaning is normal maintenance and shouldn’t require specific skill to put back. Still, you reported it to your landlord, everything that resulted from it further is on the landlord. If you really broke it (doubtful) the landlord should have fixed it and maybe send you a bill (debatable). Leaving it broken is what caused this mess.
It can be easy to misalign the trap so it drips. Maybe this was long term, but if the upstream side were the misaligned piece it could have been a problem all along but not drip until the slow drain backed up far enough
That sounds exactly like every single one of my adventures in plumbing.
You gotta replace the tampons regularly, they are only meant for occasional leakage. leaving them too long results in a variety of unpleasant issues.