Have you made sure to have notifications active/checked under your Modes > Rules for the other 3 cameras? May I ask which troubleshooting steps you have performed so far? I don't want to suggest any prior methods you have previously performed.
Yes they have a PIR sensor so can not detect motion through a window. The Q series is different and can. Someone will probably chime in on the difference with details between the two better then I can explain.
Glass blocks the IR needed for the PIR (passive IR) sensors to work. Thus, the cameras can't be looking through windows to detect. The Q cameras use pixel-change detection so work through glass.
A possibility is to use an outdoor camera to detect motion, record, and also trigger an indoor camera to record (cross-triggering). This can be accomplished in your modes and rules. However, the outdoor camera must have a view that is useful for that indoor camera to be recording - if it's pointed in a totally different direction, there's little value.