The video explains my problem, since I can't disable cross-save and authenticate on my epic games account and I don't want to wait for "70 DAYS" just to play, please help.
https://drive.google.com/file/d/1P_hFncBZg0if9D2USooyWMfE-4ii56yU/view?usp=sharing
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Nothing can be done. The 90 day lockout is mentioned in the cross save faq.