@yo_adrian_eh I have noticed it is a bad firmware problem. This issue affects all 2.4G channel, Guest, Normal, or IOT. I have 4 Deco XE75, initially it was okay; after some firmware upgrades ... it...

@Alexandre. I switch over to Google DNS 8.8.8.8 and Secondary as Cloudflare 1.1.1.1; once the new DNS has been refreshed in the network ... took about 10 mins or so. Then I switch the Main Deco to...

@Alexandre. Here's my WAN connection ... it is using ISP default DNS. Also, no special firewalls rules ... Thanks. BR

Deco setup as AP connected to ER605 router. 1. All devices connected to ER605 has internet access - no problems. 2. All decos connected to ER605 detected by router normally. All Decos successfully...