I have tried all the steps---deleting the app, reinstalling the app, rebooting the mac---still will not open after multiple attempts
Sorry to hear this Terry. Please attach your log files to this thread and I'll take a closer look. Instructions for manually (since you can't run) finding log files on Mac are in this article http://support.proclaimonline.com/hc/en-us/articles/203763785-How-do-I-submit-log-files-
Scroll down to the "Manually finding log files on Mac" section.
Also, how far do you make it when you try to start Proclaim? Do you see the Proclaim startup window? Do you see an error message?