Hello,

Is it RE450?

With all leds on, it should be working properly now; while cause there is no internet access, we can do further troubleshooting:

1. did you use the home wifi password to configure it?

2. What is the IP address and default gateway it obtained with your device connected to it?  https://www.tp-link.com/en/faq-838.html 

3. What is the current hardware and firmware version? 

Meanwhile, it is suggested to follow the instruction below to narrow down the issue.

https://www.tp-link.com/en/faq-2234.html 

Good day.