Perform the suggestions mentioned in sections Configuring Session Restore and Troubleshooting in the following article:

• Restore previous session - Configure when Firefox shows your most recent tabs and windows

Check and tell if its working.

Make sure that you do not use Clear History to clear the Browsing History when you close Firefox.

• Firefox > Preferences > Privacy: History: [X] Clear history when Firefox closes > Settings

Thanks Cor-el - unfortunately that did not solve my problem as Clear History was not checked. I cannot even get the drop down menu to open using control>click so I can click "Pin as app tab" unless my Firefox support page is open to the features section. Thx again.

-> Check if you are running Firefox in Full Screen mode

• Use Firefox in Full Screen mode

-> If your Navigation Toolbar is missing, see these articles:

• Showing the Navigation Toolbar
• How do I show and hide the different toolbars?

For your App Tabs problem, did you perform the suggestions mentioned in my previous reply ???

• Pinned Tabs - keep favorite websites open and just a click away

i did everything that everyone suggested and it is working today. Not sure what solved the issue.