Question about Galaxus Mobile International plan

I have the following questions about Galaxus Mobile International: 1) who is the provider in USA (west coast)? 2) Is there an e-Sim? 3) How long does it take for the subscription to be available from the time of order? 4) can I be called free of charge from CH within the 100 minutes or call CH myself? 5) can I buy additional call minutes in a package? Greetings P