You may need to delete consensus.db and resync.
Quit Sia-UI completely (From the system tray icon)
GNU/Linux based: $HOME/.config/Sia-UI/sia/consensus
Microsoft Windows: %APPDATA%\Sia-UI\sia\consensus
Mac OS X: $HOME/Library/Application Support/Sia-UI/sia/consensus
Delete consensus.db inside the consensus folder.
There are so many complaints about poloniex, request some one from sia developers to look into it. I also lost 25000 coins which were successfully transferred from my one polo wallet to other polo wallet, it has been 25 days, still no reply from polo, no credit of coins. Lost huge sum of money.
I transferred 10 days ago from Bittrex to Poloniex SC, which is very high amount. I can say all the money I earned from the crypto market in my 2nd year. Unfortunately my SCs do not seem to be in my wallet. The wallets were activated and deactivated many times but balance was not right. I am afraid of the disappearance of my coins. Is the Sia Developer Team and Poloniex conducting a study on this issue? How long will this problem last? Thank you in advance for your response. I can share transfer numbers if necessary.
Ah, so this is your problem, your node did not discover enough host to make contracts. This is my output when I run hostdb.
2103 Active Hosts
Make sure you are using the latest version of Sia-UI (v1.3.1). Older version will not work with the current network.
For the "No Peers", visit this site and follow the steps to fix your problem https://siastats.info/nodes.html
I've transferred 2269 SC from my desktop wallet to Poloniex on 27th January 2018.
The deposit is still missing in Poloniex and no answer from Support even the ticket is 11 days old.
You may try system restore and check if it helps if the issue happened after any changes.
System Restore can return your PC's system files and programs to a time when everything was working fine, potentially preventing hours of troubleshooting headaches. It will not affect your documents, pictures, or other data.
Please refer to the link: http://windows.microsoft.com/en-US/windows-vista/What-is-System-Restore
Or you can also use the old-school method of downloading ffmpeg.dll from the dll database website. This is one of the many websites that you can use to download the missing DLL files. Any given file would have a number of versions and you can choose any depending upon the version of OS you use. Always opt for the latest version.
Make sure you are using the latest version of Sia-UI (v1.3.1) since the old version of Sia-UI is incompatible with the current network.
Compare your blockheight with https://siastats.info, the blockheight in your wallet should be the same or higher than the blockheight shown on the website.
Similar to traditional stock exchanges, digital currency exchanges are all independently owned and operated. Each exchange is run as a for-profit business, has some sort of business plan, and makes the decision to trade in any particular digital asset (like Sia) according to their own desires and the desires of the people trading on that exchange. If you're a member of an exchange that does not currently trade in a digital asset you'd like to trade in, then you can contact your exchange using whatever means they provide to you, and politely request that they offer your digital asset of choice. If you and enough other people manage are interested in the same digital asset, then the owners/operators of the exchange may decide to add it. But, since exchanges are for-profit businesses and it costs the exchange money to add each digital asset (in the form of programmers to add the asset and update the exchange's website, resources to provide on-going support for the asset, etc), the exchange needs to have enough people interested in a particular digital asset in order to make it profitable to the exchange.
Sia's developers and the developers of other digital currencies are NOT in charge of adding any digital currencies to an exchange. The devs have absolutely no say in the matter. It's totally up to the owners of each exchange. I'm sure the devs are quite happy to assist an exchange if needed, but they can't make an exchange add a digital currency.
Bottom line is that if you want to trade in Sia and your favorite exchange doesn't currently trade in it, then you need to contact your exchange and ask them nicely to add it. If you and enough others want to trade in Sia, then perhaps your exchange will consider eventually adding it. But there's no guarantee and it won't happen overnight.