It’s definitely the cache. You need to follow these steps please:

clear-my-cache.com/en/windows/google-chrome.html

I can’t - I am just trying to help out.
Please use Firefox for the time being and we will look into it first thing - it’s past midnight here.

Sometimes there is more to it then just the cache. Some browser have other places some memory gets stored in until some time has passed or a hard reset of the machine has happened. Sometimes it happens that even after clearing the cache, the same problem occurs, this is why it worked during this moment on Firefox.

Also not every player has to clear the cache, the game usually works without needing to do it, but once again it is the browsers that need this clearing to understand sometimes that changes has happened. And sometimes just that clearing is not enough for time, why, not many of us have figured this out yet. (As a fellow web-developer, i encounter this problem myself quite often).

If the browser needs a cache clean depends on the browser a lot, and as we are not the developers of the browser, we can sometimes have hard to explain why some things occur, and some not. I hope this explain a little more on why it worked on Firefox, and not Chrome.

The ways of the browser are truly mysterious (even more than our own code ;).
We work with browsers because that's how we reach the majority of our esteemed player base - but this doesn't mean we always know why/how/when browsers do stuff, or in this case: don't.
Glad it worked out in the end.

ok, solved finally and closed