Thank you for supporting Rising Star!
The alpha is progressing well and most of the base level code is complete and has been tested for a couple of months now. You will not lose your cards as they are now in your possession. The only reason for the caveat about being in alpha is that if someone found a major bug and managed to give everyone a million Starbits then we would obviously not be able to honour that! However the current balances in everyone's accounts are valid and will not be taken away in the event of a bug being exploited.
I hope that puts your mind at rest.
One other thing I'd like to mention is that Rising Star is not being developed as a business that has to make a certain amount of money to survive. It is in fact a hobby for me and the costs are minimal so we will be around for a very long time indeed!
It's all about having fun and hopefully everyone can earn a little crypto in the process!