SLR used to be on yobit, but then the wallet was in "maintenance" mode for the longest time until they finally delisted it.

i had another coin stuck on poloniex (the coin was delisted), I created a support ticket (or two, if I remember correctly), they did sync their blockchain with the network and withdrew the funds for me
but this was about a 1.5 years ago when there were less users
try again, you have nothing to lose if you spam them few times

Well this now proves that SLR was indeed listed there - I didn't know that - I guess you'v made a ticket already about the issue and if you did how they responded to you? It is really unprofessional from the staff and a disappointment to people like you who have stucked coins there :/ I hope you get those coins back somehow tho, and this is an example again that exchanges are never safe for holding any amount for a long time...

I've never had an issue withdrawing coins. It could be that you either need to "rescan" your wallet or "reload" the blockchain. I've seen situations where the wallet says it is "synced" to the network, but not all the transactions are showing up meaning it is not exactly synced. Trying clicking on the "reload blockchain" button under the file menu, and then "rescan" your wallet.

Which is nonsense? I am not sure about 2014/2015, because the rumor about SLR being added on Polo started in the middle of 2016 as I remember - as far as I know Solarcoin was added to the source code of Poloniex, but never listed as an exchange pair with something. Here is the tweet from Polo back in 2016 - https://twitter.com/Poloniex/status/747837090365382656 From what/which wallet you are unable to withdraw your coins??? The original ANN for Solarcoin was started 23-01-2014, 22:01:52 so I hardly believe SLR had anything to do with Poloniex back then, since one of the first exchanges that listed us was Bittrex which was new like Poloniex, but smaller compared to it - every shitcoin back then was mainly traded in Poloniex and there were many requests from us here to Polo adding SLR, but nothing happened... I know that Yobit have SOLAR/BTC pari listed, but that is NOT Solarcoin and people get confused seing it - https://yobit.net/en/trade/SOLAR/BTC. If you can add a screenshot of your 3000+ SLR sitting in your account in Poloniex it will prove your "theory", but so far I think your information is wrong...

There is a Dev fund and Generator Pool that dwarfs the coin in Circulation. This is why Poloniex won't list it. We know that Solarcoin Devs would never dump the coin, but only the Shadow Knows for sure...