Issue connecting devices

[Dougy7cf]

I just purchased a Lennar home from a previous owner and have had nothing but issues with the internet since the purchase. I have to purchase a eero router to get connectivity but unfortunately cannot turn off the wifi on the eero. Since the plug in, my ruckus switch has been working but for select devices. I have been using my phone and the apps to connect/run everything but now my iPhone cannot connect to the internet (I can connect to the network but it comes back saying “no internet connect”). I know the internet is working through the APs because every other device in the house works but my phone. Looking for help.