Gmail not coming in to Mailbox after I have accessed it via Google Mail on a different network
The problem I have with Gmail is that when I leave home and join another network in say, a hotel, I cannot get access to incoming Gmail on my MacBook Air's Mailbox (I can get hotmail). To access my Gmail, I have to sign in to Google Mail. When I return home, the problem persists and I still cannot get access to incoming Gmail in my Mailbox. Recommended 'solutions' that did not work include, synchronizing, closing down mail and re-launching, taking mail offline and then back online, rebuilding. I am using Mac OS X Lion Version 10.7.5. Firefox version: 47.0 Any advice would be appreciated.