Routine with Alexa for Motion Detection won't work

Hello, I'm trying to create a routine that would send an annoucement on my Echo Dot 5 when a motion is detected on my outdoor spotlight cam. Sounds easy, I've followed the steps here ; https://support.ring.com/hc/en-us/articles/360031606811 but that does not work for me. Ring Skill is enabled, all the devices are on the same Wifi network, but nothing. Tried also to configure to receive a notification on my phone when a motion is detected, does not work ... Any clues ? Many thanks in advance ^^