Apparently, for Poloniex, legacy account means you have no control over your funds anymore unless you verify. So basically either send in your documentation or forget about the crypto you have deposited there. Have to say that's kind of lame, especially since they have explicitly said they won't disable withdrawals for legacy accounts.
https://poloniex.com/press-releases/2017.12.27-Notice-to-legacy-account-holders/The exact date for this deadline will be announced in Q1 2018
Um nope, didn't happen, they announced nothing.
While you will be given advance notice before this requirement goes into effect
Again, nope, no notice was given.
On the date of the deadline, legacy accounts will be placed in a state where:
...
Withdrawals will remain enabled at the daily withdrawal limits prior to the deadline
Yeah, we saw how that panned out.
Personally, i have some ETH there and feel it would be kinda stupid to just leave it to them so i will probably cave and go through the verification process, get my money and forget about that exchange. Will sure demand that they delete my personal data as well after i'm done (which i'm sure they'll do /s). In the end it's all my fault, i completely forgot about that 6 months old press release. Should have withdrew my crypto immediately. Oh well, another day, another lesson learned.