The certificate on your origin server is configured for the names ingress-erytho.ewp.live and *ingress-erytho.ewp.live. You need to use a certificate that matches the name your site uses. You can use any valid publicly trusted certificate or you can create a free Cloudflare Origin CA certificate that will only work with proxied hostnames. You will want to check with EasyWP to see how to fix your certificate.