Knowing what I know now, I would not order this system again solely based on the limitation of not being able to create “guest” accounts with viewing access but limited permissions.
I am reading this post, dating back to 2017, and nothing has been done to implement access to account with limited permissions.
Word of mouth is like a wildfire. When my friends talk about getting additional security cameras at their houses, I’ll definitely tell them about my Blink cameras. I will tell them how much I enjoy them, but I will also tell them not to buy them because of the lack of this feature.
Full control and access to the account should be limited to the main user, and if they want someone to have limited access for viewing, not editing, they should be able to do so, easily.