I use Xfinity email that,m like all email applications, has compose, reply and forward controls. I have loaded Grammarly for Firefox (on Widows 10) as a spell and grammar checker. When I open any Xfinity mail window Grammarly does not attach. If I turn Grammarly off and on using the task bar then it does load. Using the Chrome browser, every window has Grammarly attached. So, what is stopping Firefox from attaching Grammarly as an extension to any editing window? And how do I fix it? Any help is appreciated as it is a pain to have manual control on each window in a flood of emails. Bob N