jesus.enciso

HI friends, I have two ADT DVR (ASDR401E80 and ASDR801) with 4 and 8 cameras respectively, and I am using Rasplus software to check cameras over my network. The case is that i´m getting the error message "All server channels are being used" in both when I try to connect to dvr and suppose it is due some other admins are connected and watching the cameras in that moment. In the DVR configuration only have two users for network access (user and admin), The question is if it is possible to connect more than two users to dvr simultaneously by network? Thanks