Connecting shark vacuum/ port issues

Hello, @user_7841e0 thank you for creating a post here over Xfinity Forums. I want to help with your connection concern with you smart device. It sounds like your needing to look at steps connecting devices to your WiFi network and the channels (2.4/5/6 GHZ): https://www.xfinity.com/support/articles/issues-connecting-devices-wifi-network

Port forwarding is different and commonly used more for: 

• Video games.
• Some email application ports, like POP3.
• Instant messaging.
• Video conferencing.
• Peer-to-peer file sharing.
• Remote computer access.
• Phone service that leverages voice over IP technology.

https://www.xfinity.com/support/articles/port-forwarding-xfinity-wireless-gateway

I did want to help get the proper expectations set up that our Xfinity gateways do typically combine your channels to one for optimize your home network. This article is great going over options with advanced WiFi settings inside the Xfinity App: https://www.xfinity.com/support/articles/xfi-advanced-settings

Please let me know if this is helpful, or if you're still needing assistance. 

Ok fair enough. I was able to connect the vacuum when I had the vacuum connect via the iPhone hotspot on my daughter’s iPhone rather than the router. Why did that work but not the router?  We can’t keep the connection to the hotspot.