mantbox ax 15s 5G signal is too weak

The 5G signal of 【mantbox ax 15s】 is far inferior to that of 【mantbox 52 15s】.
Can anyone help me set the tx power of mantbox ax 15s to the maximum, thank you.
The signal of the new equipment is not as good as that of the old equipment. I was scolded by my boss. Thank you very much.

Comparison can be found in the attachment
mantbox ax 15 tx power.jpg
mantbox ac 15 tx power.jpg

what country are you in?

interface/wifi/radio/reg-info country=“United Kingdom” 0

You can manually set tx-power via CLI. By default, The tx-power will set to the factory maximum by country regulations.

/interface/wireless/edit
wlan1 tx-power