Which site is this? I'm not that familiar with the Tron network, but I would imagine you're connected with Tronlink or some other wallet to do this staking? If so, don't you have to confirm whatever action you're trying to do, from the wallet?
This tronscan.org + use Tronlink. I make succes staking arround 2 month before. then it worked. Now i dont know what happens. And i no see need confirm.