If you are a farmer (host) you shuld upgrade to GUI 6.0.1/Deamon 3.3.0
Then you will get prompted to setup a Eth adress.
If you own any Storjcoin X (SJCX) you can now excange them for storj ERC20 tokens Here: https://converter.storj.io/
Guide to set up an eth wallet on myetherwallet and excange the tokens :https://docs.storj.io/docs/migrate-tokens-from-sjcx-to-storj
Happy farming.