API sandbox shutdown due to campaign inactivity

 Some time earlier the dice mechanics script didn't work but disabling it and reenabling it (or deleting and reinstaling it) worked to solved the isue. But this time it doesn't solve anything. I've see that the API sandbox is shutdown due to campaign inactivity. The VTTES is Updated. Just in case..

Someone has to be logged into the game for the sandbox to be active.  Do you still see that when you are logged into the game in another tab? Edit:  And if you are, then you should try in a private/incognito window, since that should shut down all browser addons in case they are a problem.

First of all thank you for answering ^^. I've launched the game and opened it also in another tab to the API Scripts menu. And still the same message "API sandbox is shutdown due to campaign inactivity." I shut down the browser and relaunched it in private mode. Opening a tab the game and another tab for the API Scripts menu again but to no avail. Still the same message " API sandbox is shutdown due to campaign inactivity." 

Now it shows "No existing sandbox found.  Preparing sandbox to start on game activity." instead

Just out of curiosity, does it behave the same way in all games, or just that one?  If you make a copy of that game, and install that script again, does it work correctly in the copy?  If you deactivate that script and install something like TokenMod, does the sandbox spin up then?  Does it work correctly in a newly created game for you? I created a test game with the community sheet, installed that api, and the sandbox works for me, so hopefully it is something specific to that game that a copy will fix.

It happens to all games with scripts (or not if I restart the Sandbox. I copied a game today wherein i added a few scripts (The vampire The Masquerade 5th Edition dice mechanics and the tokenmod) with this message "No existing sandbox found.  Preparing sandbox to start on game activity."

Do you have access to another computer (friend/relative) to log in and see if things behave different there?  I'm wondering if you have some sort of script blocking security software or addons that are interfering in some way.

I'll have access to another PC tonight. "Funny" thing,  when players are in the game the sandbox kicks on but if only the GM is there it will not. Edit: It appears today that  all is coming back to normal, even if I didn't change PC, I just unplugged it.