Need a help urgent. PS: Vodafone is worth helpdesk support

Long story here

Short story: I think something wrong with DHCP server (Vodafone UltraHub router). DHCP server is ON. Wireless connection is off. Mobile connection is off. No phones are connected.

Structure: vodafone modem <-> vodafone router <-(LAN ethernet)-> laptop. All other devices disconnected from the router(!!!) just one laptop, nothing else. Trying to run the router 2nd day.

Test 1:

Laptop settings:

- ip address 192.168.1.150

- subnet 255.255.255.0

- gateway 192.168.1.1 (obviously this is ip address of the router)

Works fine!!! No problem

Test 2:

Laptop settings:

- Obtain ip address automatically

Works nothing!!! Tested with another computer, same result.

What other settings I have to check?

PS: Spent with Vodafone helpdesk ~45min, useless, helpdesk person was really mean, absolutely unhappy with the services and this is after >15years with them, we started our account with Paradise, with dial-up internet. They asked me to send a technician to check the internet but it will be >$100 charge.

PSS: Helpdesk asked me if I bought a static ip address from Vodafone, the answer was "yes" and he told me I must use it with my laptop(where laptop ip address)