I am setting up a Tp-link RE505X but I cannot find the 5Ghz host network because it is an EU model and the 5Ghz host network is on channel 149

https://www.tp-link.com/ae/support/faq/1314/

The range extenders with EU version, which can be verified by the device bottom sticker, only supports Band 1/2/3, they don’t support Band 4 channels on 5GHz  to comply with CE certification in Europe. If your host Wi-Fi is fixed on Band 4 channels, the TP-Link range extender will not see it.

V Band1: 36-48   (36,40,44,48)
V Band2: 52-64   (DFS) 
V Band3: 100-140 (DFS)
X Band4: 149-165 (149,153,158,161,165)

The host network is not in my control so I cannot change its channel.

The problem here is I do not live in Europe, I'm in Vietnam and I bought this device from the official distributor in Vietnam

There is no international firmware for this device, only EU

https://www.tp-link.com/vn/support/download/re505x/#Firmware

Why do I have to comply to EU regulation while I do not live there and why do you sell EU device outside of EU

Now I sit here with a device that cannot do anything, wasting my money