Here at Everbest, we have a team of professional technical staff standing by and we want to make sure that you are completely satisfied with your purchase. If you cannot find the solution in this page, simply call our technical support hotline at (852) 2544 0103 in our office hours (Monday to Friday: 9:00am to 12:00pm & 1:30pm to 5:00pm, Saturday: 9:00am to 12:30pm), or send email to our Technical Support Department: support@everbesthk.com.