I was having the same problem and contacted Emporea directly and this was their reply:
In certain regions, internet browsers have stopped supporting the Flash player. We have sadly no impact on that and therefore we have published a free PC version of Emporea. You can download it from our portal: https://portal.pixelfederation.com/en/emporea/about/
The game performance should be much better than in the internet version. You can also download a previous version of Google chrome or switch to a different web browser.
We apologize for any inconvenience and thank you for understanding.