The iPhone and Android applications of the social networking service have been delayed until further notice while server issues continue to be worked on.
"Since we do not want to add even more stress to the back-end servers, we are holding back on launching the Elite mobile applications until the service is stable and our players can easily access it," read a Q&A on Activision's website.
"We will have the apps ready to launch as soon as we are comfortable the experience will be a great one, and will update with more information soon."
Meanwhile the PC version, which has already been delayed indefinitely, may never be released despite the developer's efforts.
"We are working towards a universal Elite experience but we cannot guarantee if or when a version will be available for the PC," the firm wrote on Twitter in response to a user inquiry.
Call of Duty Elite has seen a turbulent launch since releasing alongside Modern Warfare 3 last week, with users finding it difficult to connect to the service.
Activision has since given paying members an additional 30 days' subscription as a result of the ongoing issues.
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