It took me half a day to figure out the truth. The confusing thing was that my Eufy 2k video doorbell works fine with the Alexa Skill, at least as far as ringing goes. However, no motion detector detection came through. They appeared fully functional in the Eufy App on my phone but not on my Alexa-enabled device. Super confusing, is not it? No warning or notifications of it not working or not being supported, as shown below.