What is the version of the following sentence with correct punctuation?

TheOnline Linguistic Support OLShas been designed to assist Erasmus mobility participants in improving their knowledge of the language in which they will work study or volunteer before and during their stay abroad in order to ensure a better quality of learning mobility
TheOnline Linguistic Support (OLS)has been designed to assist Erasmus+ mobility participants in improving their knowledge of the language in which they will work, study or volunteer, before and during their stay abroad, in order to ensure a better quality of learning mobility.