Daily fantasy eSports operator Vulcun says it will stop accepting real-money fantasy wagers on eSports events, citing regulatory concerns in the United States.

In a notice posted to the site’s blog on Monday, Vulcun said it would “phase out paid fantasy” effective Jan. 14, 2016, which marks the start of the new season of the League of Legends Championship Series.

Vulcun is advising users to withdraw all cash from their accounts by Feb. 5, after which any remaining funds will be converted into ‘gold’, the site’s proprietary virtual wagering currency. All unused pending bonuses will expire on Feb. 6.

The company said it arrived at this decision “after careful consideration (and much heartache).” Vulcun says the “current legal landscape” in the US has made it “difficult” to fulfill its aim of making eSports more engaging and fun through fantasy wagering. Vulcun says it will now focus its efforts on things all its users can enjoy “rather than trying to figure this situation out state by state.”