As part of the installation process you will need to grant espressoFlow permissions in your system settings. Granting permissions enables the full touch experience on your Mac computer.
When prompted click on the accessibility Tab
To enable espressoFlow you will need to unlock in order to make changes.
Click the padlock
You will need to enter the password used for your device
Now ensure the espressoFlow tick-box is checked.
When you have enabled the permissions the installation will continue