The Deco security is set to WPA2/WPA3 but my Macbook Pro (2015, Monterey) advises "WPA weak security" on the wireless settings. Why is this ?

I have 1 x DECO E4 main and 1 x DECO E4 satellite. My laptop (MacBook Pro 2015) despite sitting virtually next to the satellite unit seems to only connect to the main. How do I get it to connect to th