Varen is the new name for the project YF Link, a rebrand. The YFL governance token is migrating to the new VRN token. You can read the full plan about the rebrand here: https://gov.yflink.io/t/draft-proposal-yf-link-rebrand-and-pivot-to-varen/399
If you have YFL tokens, you can migrate to VRN here: https://linkswap.app/#/migrate When migrating, you will get an 1:1 amount of VRN tokens for your YFL tokens, and the YFL tokens will be burned.
You need to manually add the VRN token contract address to your wallet.
Yes. You can buy/sell/swap VRN tokens on SushiSwap. You can view the VRN liquidity pool on SushiSwap here: https://analytics.sushi.com/pairs/0x88024deacdc2e9eda02a3051377ed635381faa54
There is no time limit. You can safely wait to migrate later.
A Recent governance proposal was voted in to give the migration a dead line. The voted dead line was October 10, 2021 -- the migration contract is planned to be closed at that date. However, the vote has been since contested in community discussions and a new deadline for the migration will likely be proposed and voted on.
Ethereum fees (gas) are sometimes expensive, and sometimes it's cheaper. It's often cheaper at different times of the day. Often cheaper on Thursdays and Saturdays... You can wait for gas to get cheaper, and then make your transaction.
It's live on https://varen.exchange/#/stake . Stake either single sided VRN or VRN/ETH SushiSwap LP tokens for VRN rewards.