If the previous owners did not give you the Wi-Fi or the access password, I will be leaving you a guide on how to try to access the access points on the roof through the IP address ( logical address giving by your ISP local router ) .
How to find my Ruckus “Devices IP address” using free applications
If the methods seem a bit complicated to you, I will leave you how to do a Factory reset (physical access) to the access points, for this process you must disconnect all the Access Points from the ICX-7150 Switch and only leave one connected with the one you are going to to work or do the Factory Reset.
I after my last message, I went back to the wifi and I found the wifi name in available wifi on my phone. So I went back down to the switch enclosure where the Username and password was and I was able to log into that wifi. Currently I'm using the Lennar wifi and only one AP is activated, the middle one, I have 3 floors. See image, the 5G is active and I'm currently using it. My thought was that all AP will be connected.
Even when I log into the unleashed app, it shows only the middle AP connected, the rest shoes the orange color on both the 5 and 2.4G.