Siri support is planned for autumn / winter of 2020:
Although since eWeLink 4.3.0 for iOS you can ask Siri to run Tap-to-perform scenes. How you can configure that can be found on this KB article: How do I add a Siri shortcut?
We want you to stay safe from the Covid-19 disease caused by the Coronavirus SARS-CoV-2! Please follow some basic rules like staying at home when you have minor symptoms, cough and sneeze on the inside of your elbow or use disposable tissues and keep distance from each other. Also follow the rules and laws of the government of your country or region. Check our Corona page to learn more.