Tienes que hacer el merge de cuentas y elegir qué progreso de qué cuenta quieres mantener. Te paso los links aquí:
If you can't log into Silver Server, you probably need to merge your Red & Blue accounts. You can merge them in the dashboard, make sure to select the right server as your main server. https://pokemonrevolution.net/dashboard/ If you're still unable to log into Silver after merging your account, you'll have to reset your password on the dashboard. For more info about the merge and about the errors that might occur with it, take a look at the following link: https://tinyurl.com/PROMerge