Disconnect when config camera access in RM3011 UiAS

RouterOS Beginner Basics
1

Can anyone help me config the remote camera access with RM 3011 UiAS? I try Firewall/NAT but always got disconnect internet after fews minutes.
Thanks.

2

So what did you do exactly?

3

I setup 6APs and 1 remote camera.
port 1 : for POE in with static IP and DHCP Server 192.168.88.1
port 3,4,5,6,7,8 : for APs with no config ( i plan to build 6 DHCP Server each port. Can i do 6 DHCP Servers in each port? )
port 9 : for remote camera with setup : NAT / Add New. Chain : dstnat / Protocol : 6 (tpc) / Dst.port : 50100 / In.Interface : ethernet-1 / Action: dst.nat / To Address : 192.168.1,100 / To port : 50100
Problem is : I can connect wifi in 6 APs and remote camera ( in different internet line, can not remote camera with wifi with same internet line. Please help me fix it ) but after few minutes the APs will get disconnect. How can i fix the disconnect problem?
Thanks.