LhnpaPGvcqGVpmGqmwvg8oxgJXfXtniV6r
Does it depend on crypto or what?
It's definitely not Litecoin's fault since the network isn't congested, nor is it experiencing any other difficulties.
Did you send the funds manually or did you withdraw them from an exchange straight to that address? In case of the latter, it might very well be that the withdrawal (for whatever reason) hasn't been processed yet.
I haven't ordered anything from Bitmain, but I assume there is some sort of a time limit within you are required to conduct the transaction. In order to avoid inconveniences like this, withdraw the funds to a wallet of your own, and then conduct the same transaction.
If above doesn't apply to you situation, then it could very well be that your node needs to catch up with the most recent network state in order to publish that transaction.
https://live.blockcypher.com/ltc/address/LhnpaPGvcqGVpmGqmwvg8oxgJXfXtniV6r/