Now this morning cookie doesn't show even when following below procedure. Firefox has become a bloated hog anyway. I will switch to Pale Moon.

In the network section below you should see lines like status/200 method/get, click on the top line, it should refer to your page in the file column. This should now change the bottom section and on the right you will find a tab called cookies, click on it. see what the response cookies looks like. maybe that will give you a clue