[Trouble with Installation on iMac]

I followed your instructions and received this message when trying to eject Affinity Designer  (see attachment).  Do I need to delete the original "Affinity Designer" before reinstalling?Thanks, Pam

[Trouble with Installation on iMac]

I have followed the instructions for installing Affinity Designer on my iMac but each time I try to run the application the affinity-designer-1.7.3.dmg opens up and reinstalls the application.  I did the install two ways, by double clicking on the dmg file from my download folder and by dragging the icon into my application folder.  It is the same result, as soon as I try to launch the application it goes back to the beginning of the process.  Can you please help me with this problem?