On occasion you may find yourself unable to scroll past 25 Contacts:
The scroll bar will simply not move any further.
To resolve this issue you simply need to zoom out on the TextUs tab.
On a Windows machine Pressing the "Ctrl Key" and the "- Key" is the standard way to zoom out on individual tabs.
On a Mac using the "Command Key" and the" - Key" is the standard way to zoom out on individual tabs.
Once this is done you will see the scroll bar allows scrolling!
Should the problem persist you may need to manually adjust the resolution of your screen. Your local IT admin should be able to assist.