These are cheap box but overall from what I've read a decent buy for the money, but that said you could have purchased a costly box and it could have still failed. Nothing technical is ever perfect, lol.
Now if its only a month old your covered under UK law as its clearly faulty so just contact the seller and arrange for a repair or replacement, maybe even a refund and purchase a different box, good luck and sorry to read you didn't get a good box