Mainnet is already launched (from April 12th). We are expecting the bi-directional tokenswap to be available soon. Stay tuned and wait for official instructions.
But if mainnet launched more than 3 month ago, why they still not changed tokens? May be you mean testnet?
https://medium.com/universablockchain/universa-mainnet-launched-e76fa603c226
There is details when they launched Mainnet now it is over 3 months when they achieved their first milestone smoothly. Now people are waiting for working product and when it will get mass adoption and being used widely all around the world.