HOTspot problems

I’m having connection problems in RB 450G via HOTSPOT with devices using Android Lollipop 5.0 or higher versions that do not open the login page and it gives DNS error, but with iOS or Windows connection is perfect.
It is reported to uninstall one of the wireless packets, why? can be the solution of my problem ?
which is the most stable version os firmware for this hardware ?

Hi
Dear Friend
1.you should update your routeros
2.set check box remote and request dns

Same problem here, using RB850G2 ROS v6.40.1.
Android 5.0, 6.0 devices are not working. 4.x, 7.x are working fine.
I receive DNS error on loading any website. If i use the ip of the login page, it appears, i can login, and with ips i can browse the net.
But no name resolution.

/interface ethernet
set [ find default-name=ether3 ] comment="WAN Port" name=WAN
set [ find default-name=ether6 ] arp=proxy-arp comment="Wifi port" l2mtu=1582 name=Wifi
/ip hotspot profile
set [ find default=yes ] hotspot-address=192.168.0.1 name=hotspot radius-mac-format=\
    XX-XX-XX-XX-XX-XX use-radius=yes
/ip hotspot user profile
set [ find default=yes ] keepalive-timeout=14h shared-users=4
/ip pool
add name=0.1 ranges=192.168.4.1-192.168.7.254
/ip dhcp-server
add address-pool=0.1 authoritative=after-2sec-delay disabled=no interface=Wifi lease-time=1h \
    name=DHCP_0.1
/ip hotspot
add address-pool=0.1 disabled=no idle-timeout=1m interface=Wifi name=hotspot1
/interface bridge settings
set use-ip-firewall=yes
/ip address
add address=192.168.0.1/21 interface=Wifi network=192.168.0.0
/ip dhcp-server network
add address=192.168.0.0/21 dns-server=192.168.0.1,8.8.8.8 gateway=192.168.0.1 netmask=21
/ip dns
set allow-remote-requests=yes max-concurrent-queries=300 max-concurrent-tcp-sessions=60 \
    servers=8.8.8.8,8.8.4.4
add action=src-nat chain=srcnat comment="SRC NAT" src-address=192.168.0.0/21 to-addresses=\
    <outer ip address>
/ip firewall service-port
set sip disabled=yes




/ip firewall filter> print dynamic
Flags: X - disabled, I - invalid, D - dynamic 
 0  D chain=forward action=jump jump-target=hs-unauth hotspot=from-client,!auth 
 1  D chain=forward action=jump jump-target=hs-unauth-to hotspot=to-client,!auth 
 2  D chain=input action=jump jump-target=hs-input hotspot=from-client 
 3  D chain=input action=drop protocol=tcp hotspot=!from-client dst-port=64872-64875 
 4  D chain=hs-input action=jump jump-target=pre-hs-input 
 5  D chain=hs-input action=accept protocol=udp dst-port=64872 
 6  D chain=hs-input action=accept protocol=tcp dst-port=64872-64875 
 7  D chain=hs-input action=jump jump-target=hs-unauth hotspot=!auth 
 8  D chain=hs-unauth action=reject reject-with=tcp-reset protocol=tcp 
 9  D chain=hs-unauth action=reject reject-with=icmp-net-prohibited 
10  D chain=hs-unauth-to action=reject reject-with=icmp-host-prohibited 

/ip firewall nat> print dynamic   
Flags: X - disabled, I - invalid, D - dynamic 
 0  D chain=dstnat action=jump jump-target=hotspot hotspot=from-client 
 1  D chain=hotspot action=jump jump-target=pre-hotspot 
 2  D chain=hotspot action=redirect to-ports=64872 protocol=udp dst-port=53 
 3  D chain=hotspot action=redirect to-ports=64872 protocol=tcp dst-port=53 
 4  D chain=hotspot action=redirect to-ports=64873 protocol=tcp hotspot=local-dst dst-port=80 
 5  D chain=hotspot action=redirect to-ports=64875 protocol=tcp hotspot=local-dst dst-port=443 
 6  D chain=hotspot action=jump jump-target=hs-unauth protocol=tcp hotspot=!auth 
 7  D chain=hotspot action=jump jump-target=hs-auth protocol=tcp hotspot=auth 
 8  D chain=hs-unauth action=redirect to-ports=64874 protocol=tcp dst-port=80 
 9  D chain=hs-unauth action=redirect to-ports=64874 protocol=tcp dst-port=3128 
10  D chain=hs-unauth action=redirect to-ports=64874 protocol=tcp dst-port=8080 
11  D chain=hs-unauth action=redirect to-ports=64875 protocol=tcp dst-port=443 
12  D chain=hs-unauth action=jump jump-target=hs-smtp protocol=tcp dst-port=25 
13  D chain=hs-auth action=redirect to-ports=64874 protocol=tcp hotspot=http 
14  D chain=hs-auth action=jump jump-target=hs-smtp protocol=tcp dst-port=25