Hello. Please tell me in order to 6% per annum, the wallet needs to be online all the time?
No. You can send xxx Cloak to a wallet, then close it. When you switch it on after some time you'll get the share of the 6% yearly when your coins are staking.
That is, I filled up your wallet, let's say 1000 cloak and can close the purse and shut down the computer. Then I can turn the computer through one year and to 6% after the synchronization. Do I understand correctly?
Yes correct, if you did not stake your 1000 Cloak for 1 year, youll get 6% of that amount. i you stake it after 1/2 year you can expect half of the yearly amount. Depending on finding a POS block. you may need to keep your wallet up and in sync for a while then. The POS interest is paid only when you mint a POS Block.