Ratgdo not turn on or no detect. 

Hello, everyone! I just got my Ratgdo today, installed it, and set it up in the garage. However, it doesn't turn on, and there are no blue flashlights. I brought it back to my computer, but it's not connecting anymore. Neither the computer nor Home Assistant can detect the Ratgdo. It seems to be disappearing. How can I fix this and find/detect the device? Sorry, I'm new to Ratgdo.