Android Problem : no trusted RSA public key found for {IPADDRESS}

[Borzalic]

I'm having problems connecting with Android. I have a server from DigitalOcean. My Problem:

no issue certificate found for "CN={IPADDRESS}" no trusted RSA public key found for {IPADDRESS}'

The link I set up for Strongswan is: https://www.digitalocean.com/community/tutorials/how-to-set-up-an-ikev2-vpn-server-with-strongswan-on-ubuntu-18-04-2

What can I do ? Thanks for help.

[kennen-tech]

Same here