Seems like your using techpross for your app. If this is the case, your using the wrong app. The Prime series DVR's/NVR's use a different app called Guardian Expert.
That explains why your trying to use 37777 like you normally would on our Elite series recorders, however the Prime series uses that new app and port 8000.
Please call (866) 573-8878 Ext. 3 with your order# handy for additional help on this matter if you need it. Thanks.