EA has taken the FIFA 13 Ultimate Team web app offline until it can fix a number of "issues that are affecting [the] user experience".
Players have reacted angrily to an exploit that let users access restricted card packs featuring rare stars like Messi and Ronaldo and sell them on for a profit, and there have been calls for EA to reset the servers in order to rebalance the in-game economy.
In response to the problem, EA Sports said on Twitter: "To ensure we can fix these issues & provide a stable experience for all users, the Web App will remain offline for some time. Stay tuned."
It later added: "Our team is still working on providing a stable experience for the #FUT13 Web App. Thanks for your patience. More details when we have them."
EA has confirmed a FIFA 13 release date of September 25 in the US, September 27 in Europe and September 28 in the UK.
EA Sports Season Ticket subscribers can get early digital access to the game on September 21 in the US and the following day in Europe.
GamesMaster gave the footy title 91% and called it the "best football game ever" in the first FIFA 13 review.