I'm sorry. You are correct! Is it ok to this wallet.renoscoin.com? I want to keep it for long time.
If you wish to keep them on the online wallet @
https://wallet.renoscoin.com you are more then welcome to. I would recommend configuring 2FA for your own security.
Alternatively, the safest way to keep them would be by using the desktop wallet. At the end of the day it is up to you to decide what is the most convenient way to keep them.