Lennar connected AP's Change of Modem after initial setup

[hari_kumar_kata]

Hi All,

Amazon tech service guy set up my AP's and the wifi settings initially with the rented modem.
Now I changed my modem and I am not using rented modem any more.When I changed my modem My access points is not getting internet anymore.What settings I have to change in https://unleashed.ruckuswireless.com/  ? 
Do I have to reset and step up the AP's again? Or is there anything in the settings by assigning the new modem IP addrees in https://unleashed.ruckuswireless.com/ --> ip settings?
Please help i ma stuck here from last 14 days.