I'm no longer getting Allow and Remember prompt. I have to manually click the red icon in the upper left to access it. How do I restore the automatic prompt?

Question

Yesterday I visited a site to which I often go, pingtest.net. Normally, when I visit that site, a thin horizontal bar appears at the top of the browser viewing frame. I do not recall what it says, but it stretches the entire length of frame, from left to right. On the right edge of the bar is an x, if I wish to close it. In addition, when this horizontal bar appears, I also get a box which is about six to seven times the height of the thin horizontal bar that appears over the left edge of the thin horizontal bar. This box stretches across the width of about a sixth or fifth of the width of the horizontal bar. It contains something like the following: Show All, Allow, Allow and Remember. I normally click the Show all option, and I normally select Allow Now for all options.
Here's what happened yesterday: I went to pingtest.net, the horizontal bar appeared, and everything seemed normal. However I took no action. Instead, I changed my mind and decided to go to a different URL. My cursor was in the middle of the screen. I moved the cursor up to what I intended to be the URL field, in order to enter a new URL. Unfortunately I didn't move the cursor sufficiently. So, instead of clicking in the URL field, I clicked right in the middle of the horizontal bar. I HAVE NO IDEA WHAT I CLICKED BUT FROM THAT MOMENT TO THIS THAT HORIZONTAL BAR HAS NEVER RE-APPEARED. WHATEVER I CLICKED, IT APPEARS I INSTRUCTED FIREFOX TO NEVER PROVIDE ME WITH THAT HORIZONTAL BAR AGAIN!!!
As a result, I am also no longer getting the grey box with the Show All, Allow, Allow and Remember options.
How can I restore normal behavior, and get the normal horizontal bar and the normal box with the Show All, Allow, Allow and Remember options?

Answer 1

We had another thread recently where the user clicked "Continue Blocking" and thereafter, Firefox never showed the infobar. I posted a way to clear the block so that the infobar would display once again. It's a little involved, but if it's going to keep driving you crazy, see: [https://support.mozilla.org/questions/1011980 reset plugin behavior].