Dear [Technical Support]

I am writing to report an issue with my TL-ER6120 router. Specifically, I am experiencing problems with the MAC filter functionality.

Despite setting up the MAC filter correctly, I have noticed that it is not blocking certain devices from accessing my network. I have also tried resetting the router and reconfiguring the MAC filter settings, but the problem persists.

I would greatly appreciate any assistance you could provide in resolving this issue. Please let me know if there is any additional information or troubleshooting steps you need me to provide.

Thank you for your attention to this matter.