@ASM1 Hope you got it sorted . I purchased this for my Netatmo Security Floodlight , Blink Camera system and Kasa plus Nest heating and they all work fine .
Initially the wifi kept disconnecting after a quiet few weeks but I just researched how to change the settings or got lucky when Tesco who use other bandwidth updated the settings and not had much problem since.

There is an option to switch the 5g off . 

just thought I'd mention it since the MR200 is a great piece of kit .