The Gemini 2.5 Pro option in AI Studio has disappeared

Even with Paid Plans, It is not available that’s the Problem. I am an Ultra Subscriber. They already made models like Gemini 2.5 Pro behind the payment wall available only to paid subscribers. But currently the model is itself not available which is contradicting their retirement plan mentioned in their website. There is no stable recommended replacement model available for Gemini 2.5 pro, Hence this is highly unacceptable.