Warranty Assistance

How do I request warranty assistance?  Tried emailing and completing the “Contact Us” form with no luck.  HELP!

Dear user,
Thank you for your message.
For product quality problem, please send an email to our official website by cs@lepro.com/cs@lepro.co.uk/cs@lepro.de to contact us for after-sales service or claim. 
Please feel free to contact us if there are any other questions.
Best regards
Lepro Customer Service Team