Hello i have problem. When I want to add a router to tp link cloud, I can't add it because I'm not the owner. what should I do?

Recently bought this router and am trying to run it out to the garage, I'm getting a Ethernet connection but trying to setup wifi tells me I'm using the wrong password. I've tried factory resetting bu

was using direct modem provided by ISP to Laptop using Ethernet cable. Now got to configure my new TP link router for using in router mode and connect other devices. Please help in doing the same.

I have this router from a previous ISP - they have now ceased business but I can still use this as an access point. This works, but the router has very tenacious branding from the ISP: Logo on the log

Does not want to connect with fiber

I would like to block some UDP and TCP port on my router , can someone help me with the steps