OK, recently changed my kit and got my Sky Q mini and Sky Q Apps all working flawlessly. I currently have the following setup.

Sky Fibre Max --> 2862n (wifi off) --> Google Wifi --> 8 Port switch --> Main Q Hub

My Sky Q main Connects to wired lan via a switch.
My Sky Q mini connects to my wired lan via the same switch

My iPhone and iPad devices can use the Sky Q apps when connected to the Google wifi network.

This setup did not work on Orbi, nor have I tried it with the 2862n wireless, but I don't think wireless N will be suitable for streaming 4k TV plus iPads so I haven't even tried.

I know its not not using the Draytek - but at least it works reliably.

I have a very similar issue, whereby I cannot connect to my regular Sky plus box from the Sky+ app (on my Android) via the wifi on my 2860ac since updating to the latest firmware. Other APs on my LAN are fine.

https://forum.draytek.co.uk/viewtopic.php?f=19&t=22189

My thoughts are our two issues surely have the same root cause.

I also logged a support case just now.

3.8.7 is out on the Taiwan Website.

I have been sent a link to FW 3.8.9 to try. I will report back later.

GSB1 wrote: I have been sent a link to FW 3.8.9 to try. I will report back later.

So far so good on FW 3.8.9.

GSB1 wrote:

GSB1 wrote: I have been sent a link to FW 3.8.9 to try. I will report back later.

So far so good on FW 3.8.9.

Celebrated too soon, problem still there.