Unbidden this program switched to this page destroying the game I was playing. How can I stop it?

Game: klondike3
Game #: 2104297702
Browser: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:94.0) Gecko/20100101 Firefox/94.0
Window: 1027x486
JS-Version: 2021-07-01_21:53:26_-0700_073f291b2e50363b317f3b2317168846c20d766a


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