Was tun mit den MOS- und SPCY-Token? Kann man sie retten?

Unfortunately it's not possible.

If you have MOS and SPCY tokens on the Kanga exchange, which has experienced delisting and withdrawal suspensions, there are several options you can consider to save your tokens: First, check the information from the Kanga exchange itself. Is there a plan to lift the withdrawal suspension or resume token trading? Make sure you are following the exchange's announcements and social media accounts to stay updated. One option is to send the MOS and SPCY tokens to an external wallet, as you suggest, such as Metamask. After depositing the tokens into an external wallet, you can check if they are available on another exchange that supports these tokens. Search popular cryptocurrency exchanges and make sure the MOS and SPCY tokens are listed there. If so, you will be able to exchange them for another currency or sell them. If there are no available exchanges for MOS and SPCY tokens, there is a risk that they may become worthless. In such a case, I recommend consulting with cryptocurrency experts or lawyers specializing in this field to obtain further information on the possibilities of recovering the value of these tokens or any potential claims. It is important to contact professionals and understand your options and risks associated with such matters. Never share your personal information or private keys with unreliable individuals, and always verify the source of information to avoid scams or phishing attempts.