Get ahold of Blink tech support - how to contact Blink is in the mobile app. They will have you install a remote monitoring software that allows techs to do live diagnostics. They will find the holes in your network that are limiting performance of your camera system.
The cameras work as there are hundreds of thousands of them out there working. Ring has millions of cameras working. However, in all of this, they don’t work on everyone’s network and not on everyone’s mobile device. Way too many combinations for Blink to pre-test. So they do remote live diagnostics instead.