I have difficulties to use my product(s) even after reading the user guide; can you provide specific assistance? 11 October 2022 16:24 Updated To get assistance regarding your product functionality you can reach us via our contact form. Related articles GRIII manual download page. GRIIIx manual download page. Where can I download new firmware, updates etc. for my device? I am a business how can I pay without tax? How do I contact your repair centre?