[isaacnnn]

Got in contact with them recently and they told me the same thing, to file a PR. I have never done one before so am somewhat apprehensive and also don't understand how it is relevant to my claim considering I said that my package showed no signs of damage. Any suggestions?

They just need a PR in order to pass whatever stage they are at in the "investigation", it's quite common for it to be a requirement. Don't be worried about it, the police do not care for things like this. But at the same time, you don't want lots of police reports filed under your name, you may want to save it for a larger SEs. Up to you and what you may plan to SE in future.

It is more common for PRs to be asked on DNA claims as it is usually the result of theft, I don't hear much of them asked on EBs.