Ex8000 won't work with Synology AC2600 router

Hi there!

I found this (unfinished) thread after running into exactly the same problem. I just replaced my ZYXEL router with a SYNOLOGY RT2600AC. I used the EX8000 together with the ZYXEL with exactly the same settings (security). Using the assistant, it will find the networks, but won't connect to the router. The LEDs for connection and speed link briefly blink twice before going off. Connecting to the EX8000 again tells me that no connection could be established. I also changed the WIFI channels to the recommended ones, without success.

I also found another thread (whichI can't find back), telling that the issue was solved after getting a new firmware through NETGEAR support.

Firmwares are the newest from the website as of yesterday (MAR 8):

EX8000: 1.0.0.118

SYNOLOGY: SRM 1.1.6-6931 Update 3 

Any help would be appreciated to the my equipment back up into service.

Thanks

Bastian