Hi, we are a hotel and using approx. 30 Ruckus-7025 devices. They are connected to HP PoE switch and there is no controller as they are working on standalone mode. AP's create an additional wifi network called "Island" in every 2 -3 days and clients have a warning on their phones as "can't get IP from device". Device firmware version is up to date as 18.104.22.168.128 We are using an interface called Cryptospot. We also have Cisco standalone devices but they don't have this issue. IP lease period is 24 hours. Any help is muchly appreciated.