Stoped working only small part works

Hi i have my s1 ai lights instaled and work fine for 2 months. Now they stoped working and only first 15 cm works. I tried to restart and remove them from app and add them to the app again. I have 2 lights strips. One doesn’t work at all and second work but only 15 cm. 

Looks like adapters are ok because after I removed them from app and search for new devices it found me 2 of them. I have no idea why the stoped working any help out there ? 

Dear user,
Thank you for your message.
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Best regards
Lepro Customer Service Team