I have read the posted solution threads and am still stuck with solving this issue. I have created a python app that works perfect on my machine and I would like to distribute externally via .zip file. I have created a certificate and downloaded it (G2 Sub-CA (Xcode 11.4.1 or later)) Next i have installed the Çert into the login keychain along with the Matching G2 Intermediate Cert (in system) and the proper Root Cert. However I am still not getting a proper chain when evaluating the developer certificate and I am at a loss at this point. I would love to pay someone to simply walk me through it if anyone has some time to solve this problem with me so I can run the notarytool and then distribute my application. Thanks!