I have FF 47 set to accept cookies, accept 3rd party cookies, and have listed everhelper as allowed in cookie "exceptions." When I click on options, there is a error message on the top of the window warning that due to cookie settings etc. etc. I installed in Opera without incident.
Any suggestions as to why FF/Eversync have this cookie conflict?
Сервис поддержки клиентов работает на платформе UserEcho