Hope you are doing well !
It appears that your access points are already configured if you don't know the credentials. I suggest you go to a Factory reset to bring up the configure.me and configure the network correctly.
In order to do a factory reset correctly on one of the access points you must disconnect the rest of your access point from the "ICX-7150-switch", for example, if you have 3 access points, you should go to the switch and disconnect 2 of the cables to turn off the "2 access points" and only leave 1 connected with which we are going to work the factory reset once you configure the access point and make sure all is good go ahead and reconnect the other Access Points back.
Here is a guide how to Factory reset and configured correctly:
Physical Factory Reset an Access Points Ruckus:
Ruckus Unleashed Set-up using your Mobile: