Hello, it's my pleasure to serve you! Which version of UC browser are you using? Both Android UC browser and PC UC browser can play normally, and there will be no "use Firefox or Google browser" prompt.

It is suggested to clear the cached data of the browser and restart the browser to play it again. If not, provide screenshots to verify whether other browsers can play normally. If you have any questions, please continue to give us feedback and we will follow up for you as soon as possible.