Yes
You can access your wallet
Using your post key in Hive keychain and the following link
https://ecency.com/@itsmehey/wallet
In the wallet, click on
Number one you will see power up make sure to enter your username as receiver and sign the transaction with power up.
If successful, you will see Hive power up on number 2 grow with an addition of the amount you powered up.
If you have the fund to buy on the exchange and transfer it in your Hive wallet, you will get rapid influence by powering up more Hive
Regards
