Can't Roll or post

On Roll 20, since last Night, I've become unable to post anything in chat.  I type into the text box as normal, and press enter. But the chat refuses to update. Following that, I can't use the Roll Command, because of similar results. And pressing any of the shortcuts to roll on the 5e character sheet has no effect either.

Hello Emile. We're sorry to hear that you're having issues with the site. Could you please carefully work through these steps of our guide to  Solving Technical Issues ? Step 1: Make sure to use the right browser Please check if these issues persist when using both Chrome  and  Firefox. Step 2: Ensure that there are no extensions/addons interfering with Roll20 Please disable  all  add-ons/extensions  and  anti-virus programs. Step 3: Clear your cache If none of the above succeeds, please thoroughly work through  Step 4 .  (Don't forget the complete Console Log!) Thank you!

Also a game's creator is often able to fix issues with their Text Chat by  clearing the Chat Archive  (note: not  clearing your current Chat Log ). A GM might want to copy/back up the Chat Archive before the creator clears it.