I am so mad right now i have connected them over 5 times each and I get a failed message at 25 % . But most of the time i can connect and when i do 1 thing it shows offline again. I can also still use the devices that were already connected to alexa with alexa but i can not connect the new ones. At the moment i don’t have lights in my room because of this !
Try logout the app and login again.