I have an app that uses Bonjour Wifi to connect to my iPhone app from an iMac. I also have 2 SSIDs. However the iOS app will work for some hours and then cannot connect to one SSID. If I toggle to the other SSID I can connect again for a few more hours before I have to repeat the process. I also have an iPad and it behaves the same way. Has anyone an idea of why this is happening.