Blink is a good easy to use basic system. It was bought up by Amazon who also owns Ring. Amazon it seems wants to keep Blink cheaper with fewer features than Ring or other brands becaues they seldom do updates for Blink. Blink users have requested for years more features and it almost NEVER happens. If you want to veiw all cams at the same time you’ll need to move on to a different brand that supports this and also PC, NVR capable. Other brands have person vehicle detection, much higher resolution, 24/7 recording, built in siren, built in lights, etc.
Blink has known for years the activity zones don’t work well and they haven’t fixed it. Many have complained about the battery status “OK” which doesn’t help when batteries get too low to operate the camera but the app still say’s “OK.” All other brands I know of show a percentage of battery charge, much more accurate yet Blink won’t change the OK.
It’a wise to learn about brands and what their cameras can do before buying. Watch Youtube reviews, read reviews online, etc.