My code is FC40X8BFZ and you need to put it manually in the sign up process on https://www.cashback-cards.ch
Looks like with this code each of us get CHF 40 and you still get the 5% on Amex purchases on the first 3 months (up to CHF 100) they offer for any new subscription - sorry for the false advertising, I believe it was higher when I signed up, or maybe I am confusing.
After that, 1% cashback for the Amex and 0,2% on the Visa or MC (so this last one use only as back up when Amex is not an option). They credit it to you in cash once a year.
Just NEVER use it for purchases outside CH or in other currency or you have a fee of 2.5% which defeats the purpose. For these you should stick with Revolut or Neon.