just to say that you put wrong infos in the child's css file so it is not detected.
Just update corrections for dummies ;)!
good ones are:
/*Theme Name: TM 9studio child themeTheme URI: http://9studio.thememove.comAuthor: ThemeMoveAuthor URI: http://thememove.com/Version: 1.0Template: tm-9studio*/
Thank for your information.
It will help us improve the theme better.