Long story short; I'm desperately looking for a lo...

Long story short; I'm desperately looking for a lost mail sent by Hoxton Mix.
I don't know what's in it, where did it go or it's important or not. I'm asking for some simple details about my post to claim a lost mail to Royal Mail at least, they don't have any records.

They could have kept some details to help their clients for claiming. But, Nothing there.

Unfortunately, I've bought annual package and I must wait until the agreement ends. I'm not sure about the renewal anymore. I trusted the reviews. But think again, especially if you intend to run a business.