Just setup my system this evening (4x720p amcrest). I had no problems connecting with this app, but I have a great wifi network at home. I even used this over a VPN connection (cisco anyconnect via ASA 5505) on Verizon LTE and was surprised it worked there too, although it did have a minor delay connecting at first. Im very happy with the user interface (pinch zoom, camera select, playback, etc.) and everything seems to work very well so far. I will return to update my review if anything changes.
Sub5pac3 about Amcrest View Pro