What would I do if...

[Dainty]

I'm a new ebayer (i've used my dad's until now) so I have 1 feedback.. Sold an item, the dude didn't pay for two days so i sent him an invoice to remind him and a message asking him if everything was alright and to please let me know if there were any problems, after no contact i filed an unpaid item case... he finally payed today so i'm shipping it out tomorrow but..
is there any reason he'd be able to leave a negative/neutral, what would I do if he did? I'm really startled by all of this just because i didn't get any contact from him at all..

[Lollipop]

Hmmm you did everything right. From what you have done he has no reason to give bad or neutral feedback. I don't think he will either. You will have to wait & see what feedback he gives you

[ponylady]

I agree with Lollipop, you did everything right.

I see no reason, unless they are a complete jerk that they would leave you negative for you opening a UPI case.

If they happen to, I am sure with EBay's new policies concerning feedback, you will most likely be able to have it removed.

[Shenanigans]

I've opened cases against people (and some of them have paid after that, some not) and I've never received a negative or neutral for doing so (though I too am always worried about that ) If he did though, I think you'd be able to have it removed like Ponylady said