Hi @xaviduran
From today you are included in the community support program and you have been delegated 50SP. Check your wallet.
Congratulations!
Check again my post with conditions, rules and recommendations
https://steemit.com/hive-185836/@bambuka/project-rules-14-days-of-diving-and-latest-project-news
https://steemit.com/hive-185836/@bambuka/629cqb-the-program-14-days-of-diving-community-world-of-xpilar

You don't need to sign up anywhere, you are already signed up :)
Yes, it looks like a loan for 14 days. After this period, the delegation can be either withdrawn or left. It all depends on your activity and your creativity.
Wish you success :)