I want to join but I found this on the website that signature campaign is ended. How true it is.

"Buy them on #trading of the official discord. Beware of scammers!
Join the BTC Airdrop (Completed)
Join the Signature Campaign (Completed)
Contribute to the community
Become a validator
Vote for a validator who is willing to share block rewards (e.g. semux.info pool)"