Ios deploy on framework help

I have a few apps developed in ionic, and now it’s time to run on ionic framework cloud deploy platform, I can’t find my ios certificate password, I’ve been looking at forums and following the steps 3 days straight, now my colleague is doing the same thing. With no success. We deployed an app 1.5 years ago no problems, now for some reason we hit a brick wall. Using mac mini OSX High Sierra a computer I barely use. I developed the app on pc surface pro. Please help.