I may have just figured out a workaround. I noticed at the top, when I switched to paid subscription, it automatically set my preference to ChatGPT o1-mini. While in that mode, none of my old conversations were working. Within one of the conversations, I changed the mode to ChatGPT 4o, and it started working again. Furthermore, after making that change, I switched by back o1-mini and it’s still working. This seems to be the case for all of my old conversations that were not working. I haven’t opened one yet that this didn’t fix. Fingers-crossed that solves the problem!!!
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