No company that provides a web browser, including Mozilla provides one on one support by phone, chat or email as it would be far too costly to have the call centres that would be required to do it for a free to use product. They may provide direct support for Enterprise users who pay for it. https://support.mozilla.org/en-US/kb/avoid-and-report-mozilla-tech-support-scams The is a support forum ask your question in a new thread and people here may be able to help you with your question(s) or issue(s).