E1 Lights not all connecting

Hello, 

I purchased the 150 E1 lights. I checked every single strand to make sure it worked before I hung them up. Now, I have
one strand that won’t cooperate with the rest of the colors. 

I have already reset the connection multiple times, deleted the device and re-added (even creating new Lepro accounts), have already tried updating the length, and still it won’t work. 
I also have problems with the AI function only working for 10 seconds and then it glitches.  

What else can I do to fix the issue?  

Dear user,

We sincerely apologize for any inconvenience this issue may have caused. 
We have sent you a direct message to provide further assistance.
We look forward to your response to that message.

Best regards,
Lepro Customer Service Team