Adding a new app via the Bitrise UI fails because the repository is protected by a VPN.
Bitrise offers several solutions for VPN access depending on your requirements. The most popular option is our Connect to OpenVPN Server Step. However, these Steps are included in your Workflow to be used during the build. But first, you have to add the app to Bitrise!
To do this, add a "dummy" app from a git provider that is not protected by your VPN. This can be an empty repository. Once the dummy app has been added, go to the Settings tab for the app and update the Repository URL field:
Another option is to add your VPN-protected app using the Bitrise CLI. Once installed, add your app locally from a machine that is behind your VPN.