Again many thanks, but as you probably notice I'm not that experienced. I do have the private key and when I use this in https://jswallet.github.io/#ThisIsYourSecretBrainwalletTextstringDontShareIt I get a screen of "myriadcoin jswallet" with probably a new wallet address ("myriad coinaddress") with 0 amount. Do I need to send my coins to that address and how can I do that. I'm also wandering how I can open that (new) wallet because there is no seed or private key.