To open the Settings you will select the three menu bars on the left side of the swissHear title. This will open the menu window that will allow choosing the Settings Dialog.
Tipp: if the volume can't by increased over a certain point your device tries to protect your ears. To force a higher volume please use the hardware volume control buttons of your device. Acknowledge any warning messages shown by the system. Be aware that using a high volume can further damage your ears. Allways use the lowest volume that you are just comfortable with.