I use TP-Link router from Unifi. At home, I use an app from TP-Link called "Tether" to access and make changes to the router since my phone is connected to the house wifi.
How do I control my router if I am outside? Primarily, I need it to cut Internet access to selected gadgets the kids are using.
(I humbly request to use simpler, less technical language to explain).
How to remotely access router at home