Generally speaking, according to the relevant data, the chicken simulator does not fully support the PS2 simulator, and there may be a problem that it cannot be saved. In addition, if the chicken simulator can't save the game progress, you can try the following methods:

1. Check the simulator settings: Make sure the simulator settings are correct. If you have special storage requirements, such as using specific storage devices or file paths, you need to set them as needed.

2. Check the storage location: make sure that the storage location is set correctly. If the storage location is incorrect, saving may fail. You can try to change the storage location, such as saving the game to internal memory or external memory card.

3. Check the game file: If there is something wrong with the game file, it may also lead to the failure of saving. You can try to download or copy the game file to the chicken simulator again to ensure the integrity of the file.

4. Update the simulator version: If you use the old version of the chicken simulator, there may be some problems. You can try to update to the latest version for better compatibility and stability.

Generally speaking, if the above methods still can't solve the problem, it is suggested to contact the technical support of chicken simulator or seek help in relevant forums. I hope this answer can help you.