"The provided app group is invalid" error when using AltStore to install Apollo Reborn.
Has anyone else run into this? I have AltServer running on my Windows 11 PC and have successfully installed AltStore onto my iPhone 17 Pro running iOS 26.6.2. But every time I try to install Apollo Reborn I get that "group invalid" error.
I have Apollo Reborn currently installed on my device via Sideloadly. I installed 3.6.0 last night.
Has anyone run into this, and do you understand what this error means and what I need to do to fix it?