I had same problem. All okay now with latest firefox.
There is/was a certificate bug in Firefox - unsupported add-ons, it has been fixed in latest download of firefox info: blog.mozilla.org/addons/2019/05/04/update ClickHere
Markdown lets you add more formatting to your post. Simply type in your post and it will display as written.
If you wish to add bold or italic characters, add a hyperlink to another website, a heading or a horizontal line, simply use the relevent icons above the text input field.
A preview of your post will appear in the grey box below. If you make a change and you're not happy, simply press the back arrow icon to undo.
Pokémon Sword and Shield preview
The Best New Illustration and Graphic Design Talent from Brighton and Middlesex Universities
macOS Catalina Preview: First look at the new Mac update
PlayStation 5 (PS5) : date de sortie, prix et autres rumeurs