Getting Started with Skill Integration for New Lindy Users

Hello Lindy Community, I am New to Lindy and I got stuck in one of agent. I am trying to add skills to my agent but it is not allowing me customized those skills and even authenticate. Like if i integrate send email with agent as a skill. It didn't even ask me to connect account and customize it to whom to send email. It didn't popup anything to ask me to connect account and customized. And every integration is behaving like same. Can any body tell what's happening there?