@Solla-topee Thanks for replying. Here are my responses: Have it for 6 months and happens since installed. I mannually turned off. Yes, this is the configuration right now on router. Unresponsive, no...

@dpr104 Unfortunately I have not. I disabled 2.4Ghz on extender.

Hi. I have been trying to fix this symptom within my wireless extender. After several tests, I found out the RE450 locks up when clients are connected on the 2.4Ghz network. It becames unresponsive,...

@Frushtuk Hi, were you able to fix this problem? I am having the same with my extender.

@Gopa Hi! I was facing the same problem and after applying this recommendation, I was able to scan and connect to my 5Ghz ntwk. Hope this helps: https://www.tp-link.com/ae/support/faq/1314/