We can get 4G or 3G signal which depends on the ISP's network signal. Try to power off the router for about 15mins and power it back on. Then, try to configure it manually. good luck..

There is newer fimrware than 160706, you may update their official latest firmware to see whether it can get both working properly.

generally speaking, when we move to another country, we just need to enable data roaming function on the router. Confirm the local cooperative ISP and connect to the relative APN according to the ISP.

What's the status of powerline LED on both of units? According to your description, it seems you haven't paired them successfully. Have a look at this to pair them again....

That beta firmware is not for 8030P V2. It seems there is no beta firmware for V2 version.. The one you mentioned is also used for V1 not V2. If you ping LAN IP address of your main router on the...

hey, you can have a look at all the tp-link power bank here. https://www.tp-link.com/en/products/list-5689.html