@TP-Link Thanks for your reply. I use the Deco's in access point mode, so that should rule out the Deco's from being the culprit. As a test, I connected my PC directly to the cable modem and indeed:...

@TP-Link I have got a comparable issue with my Deco S4: When connected via the Deco system, I intermittently cannot acces my email via POP3 on port 995 of the mailserver. I have got three Deco S4's...