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 How do I contact your repair centre? Where can I download new firmware, updates etc. for my device? Wrong link to registration page and Download page for user manual How to contact technical assistance? GR IIIx manual download page.