Hello Plicson
I'm sorry for your inconvenience, but as you lost your Shiny Magikarp due to a roll back, there is nothing to do.
Please take a look to this thread : Read this before making General Support topic.
As said, this kind of inconvenience must happen at anytime, that's why I advise you to force relog when you complete/catch something important.
I wish you a nice day, and hope you'll enjoy the game :Grin:
- Locked as answered -