Try going into your settings->security-> allow opening software from unverified developers.
I would verify the installer file and the link will be below for a step by step.
Then once verified install it and switch the setting back to verified developers only.
For a more step by step.
OK. Thank you. Trying to figure this part out right now.
I can't find where "allow unverified dev" option is... 😞 
I still get the pop up the app is damaged you should trash it when I do the cntrl click on app and choose open from the down menu. 😟
That just shows I am not alone.
Two months ago I was trying to follow instructions for some commands through terminal but that was a bit out of my league and it didn't seem like I was doing it right or something... Obviously... because I am back at this struggle 2.5 months later. UGH. Such a bummer.
It must not be meant to be with bisq and me.
I’m sending you all my energy that it hopefully works for you with this
Thank you!
I ended up clicking installing Update on my Os so now I am stuck for half an hour before I can use my System settings and follow some instructions.
I am jumping in the hot tub!
I might just give robosats a go again too instead after this.
