I couldn't find Tplink TL-WR844N so I just chose a random router model. I bought Tplink TL-WR844N recently but I've constantly been having issues.

There are 3 light, one for power, one for lan cable connection and one for internet connection. If the internt connection light is green it means you're good. I have the green light for a bit but then it turns red and begins blinking red which means the rotuer is not able to get any connection. I thought I might have a faulty lan cable but I put it in my old router and it was just fine. What is the issue and how could I fix it? Thanks