Anyone else using an AX1500 (AX10 V1.20) on the latest BETA firmware having issues with DFS channels? I don't even see them from my drop down list. I have only a few available maybe 10. I want to connect to channel 56 but I don't see it. I'm fairly new to this entire thing so forgive my ignorance. I also thought this router was 160Mhz channel width capable when I bought it because it was under TP-Links WiFi 6 branding which explained how WiFi 6 works etc and mentions 160Mhz. 

Contacted TP-Link directly and was asked why I wanted to even use 160Mhz and DFS. Told them because it was a promised feature under their WiFi 6 bragging rights link, and the AX1500 is a router they touted at the bottom of that link. Meanwhile I couldn't find anywhere that states the capability of channel width or DFS for the routers. Any help? TIA - Mike