Troubleshooting hasn;t worked.
apparently firefox has no technicians and no phone number?
I would like to inform you that most of the people here on this support team are not employees, and are volunteering our time.
Firefox does not have a phone number for help, and no technicians for this purpose.
If you would like help, you will need to use this forum, where volunteers like me can assist you. To your previous question, please follow jscher2000's directions, they are very experienced, and their response should help.
The link to your previous thread is https://support.mozilla.org/questions/1365701
Although we can not provide the service you seem to want, I hope that their answer fixes your issue.