Case
This issue appears in Link Twilio Account wizard while in Select a Default Request Type stage as below
Reason
WhatsApp Connector for Jira acts as Email Requests in Jira Service Management, where you can't link a request type with required fields other than summary and description, for which the app filters request types and displays only suitable ones for integration
Solution
You can either create a request type dedicated for this integration, or you can double check required fields on your screen and disable the required confirmation