If you are not using this option make sure it is empty or has the default value to not have additional unused code on your front-end. Default value for Wrapper Selector is {bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}1$s.gtranslate_wrapper{bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}2$s.