ChromeOS support

There’s a Wishlist item for computer viewing here(this includes Chrome OS):

You may be able to do this using APK Mirror, but I don’t have any experience with it and I’m unsure how stable it is.

If you only need to view the cameras, you should try TinyCam. It can be unstable at times , but works well for watching the cameras. You can purchase cloud recording services from TinyCam, but it’s not worth it if you already use Cam Plus or the local SD card recording.