@Joris1982
Hi, Currently, for the Nest devices you have(Nest Cam Indoor+Nest hello video doorbell and Nest Cam IQ indoor ), only the Nest Cam indoor failed to connect the wireless mesh of Deco X90, right?
Would there be any error message when it failed to connect?---can I have a picture of that?
I searched for the spec of Nest Cam Indoor, and found 802.11 a/b/g/n (2.4GHz/5GHz) Wi-Fi; WEP, WPA, WPA2 encryption supported, since Deco X90 is also WPA3 capable, have you tried to turn off the WPA3 and use WPA/ WPA2 for the Wi-Fi;
Thank you very much.