Welcome to Hive.
I checked out your account on HiveBlocks.com. It said that you lack sufficient HIVE POWER for your account to work.
https://hiveblocks.com/@cristiano6
I decided to give you a 15 HP delegation. a delegation is an interest free loan.
15 HP is enough so that you can write 14 posts over a five day period.
The amount of HP in your account determines the value of your upvote. Go to the Upvote Calculator and type in 15. It shows the value of your upvote with 15 HP is only 0.0002. It is essentially worth nothing.
Anyway, have fun on HIVE. I will remove the delegation in a week or two.