Can't supply an answer. What is an expired token? Where is the back button?

[Motoman43]

I can't reply (i.e. answer) to a post.
It says token is expired. Push the back button.
What/where is the token?
Where is the back button?

It looks like the Q and A function is stalled and not working.

 

[mustang7757]

Try to sign out then back in or different browser

 

[mustang7757]

[Moved this to site and feedback forums]