On an aside, I contacted Poloniex regarding their wallet issues asking what the problem was - they replied saying they "can't explain" what the problem was.....great

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I'm getting pretty tired of Poloniex now tbh, I've not been able to access my coins for weeks now.
Poloniex is a mess.
Probably better to change for BTC --> send to other exchange like Bittrex and turn back into SYS
I would, but they've now disabled their BTC wallet, as well as 15 others!
No reply to my support ticket about a missing BTC deposit either.
Poloniex truly sucks. If they ever get around to getting their act together I'm pulling out completely.
Yeah it's better to stop using Poloniex now that they ask for KYC. Binance is a better option you don't need to give them your info and you can withdraw 2 btc each day