Hi, My Macbook is with older version of IOS (10.15) and I have no enough disc space to update the latest version of IOS, but when I download the latest version of OBS Studio it can not be started because it uses the latest version of IOS. So where can I download old version of OBS that works with my version of IOS or mainly how can I use OBS with my version of IOS. Thank you for the help.