Ionic Pro: ERROR when uploading app

I’m trying to upload an app in my IONIC PRO account (https://dashboard.ionicjs.com/apps).

In the ionic app folder when I try “git push ionic master” I get the error:
Permission denied (publickey). fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.

Other informations:

1. My technologies:
cli packages: (/usr/local/lib/node_modules)
@ionic/cli-utils : 1.13.0
ionic (Ionic CLI) : 3.13.0

local packages:
@ionic/app-scripts : 3.0.0
Ionic Framework : ionic-angular 3.7.1

System:
Node : v7.3.0
npm : 3.10.10
OS : macOS Sierra

Misc:
backend : pro

2. IONIC PRO account type:
At this time I’m using the FREE (kickstarter) accouny type

3. IONIC VIEW app
I have installed the new IONIC VIEW app (the one with the blue background icon) for keeping track of my uploaded apps in IONIC PRO account

My questions:

  1. What sould I do in order to be able to upload the app in my account?
  2. Is it necessary to make other settings or to create another account type?

please try this command

git remote rename origin ionic

after this run command

git push ionic master

Ionic Pro is a hosted and closed source service, so there is not much we, the community, can help you with, sorry. Check these:

You can - and should - contact support at http://ionicframework.com/support#support

Thank for the answer.
Unfortunately I recive the same error.
I tried to put the same SSH key in my git account and in my Ionic PRO account. I have no idea if I was supposed to do this but even in this case I still recive the error.
I have no idea what else to do.

did you link your project to ionic pro account?

Yes, I have done that.

read this information carefully and follow it,
goto your repo-> settings-> Git