This is a typical „support statement“ (I am such a support guy at work, I know the game) and it’s nonsense.
At least my internet is rock stable.
But it seems, the Beatport servers are a bit wonky from time to time. The whole webpage seems slow to me, the downloads as well. On the other hand we’re watching here 3 x 4K-video streams at once and the download speed is around 15 MB/s from every other website… so it’s not the internet connection - at least not at the users side.