All exchanges NEM wallets are offline. The Buy 5k Sats Trick is a temporary work around for confirmed deposits for all coins on cryptopia. Coinpayments.net was shown to be laundering the stolen XEM. Please just read the latest info on forum.
I purchased xem from bittrex and sent them to my account at cryptopia. They arrived there and the deposit was confirmed but did not appear in my wallet.
Surely at that time, Bittrex wallet was online.
So your comment of [All Nem wallets are offline] does not apply.
(I did not check the current status of Bittrex wallet since my funds were received at Cryptopia.)
Secondly please read carefully my post - if you want to be helpful as your slogan indicates.
I said I came across this [Buy 5k sats trick].
It is not a fair requirement to get your funds in your wallet, even if this applies to other coins.
How it was known to users?
Most likely someone from their side, acting as a user, posted it as a [Trick/ workaround] while it is/could be a requirement.
And if it is so widely known, why they did not fix their system?
Thirdly I was wondering if this mess might have connection with the issue of stolen coins, and the probability of them being moved to other exchanges.
I am afraid I did not find your post of any help.