Solution is this. Disable the DHCP pool of the hotspot server.
ie Go to ip-hotspot-servers.
Select the hotspot server u are using and change address pool to none.
This way u have only one dhcp server working.
Had similar problem once.
That is the Universal 1:1 NAT pool, not a DHCP server.
Specific answers require specific questions. When in doubt, post the output of "/ip address print detail", "/ip route print detail", "/interface print detail", "/ip firewall export", and an accurate network diagram.