Using JM Twitter 3.3.6 with SEO Yoast installed but
NO selected for Use SEO by Yoast for meta title and
NO for Use SEO by Yoast meta description
Entered TitleTwitter as key for Twitter Title
Entered DescriptionTwitter as key for Twitter Description
Populated these custom fields in posts
JM Twitter populates Twitter Meta with post title and post content not custom field data. (Other plugins find these custom fields)
Tried changing Card types, updating, new post.