ChatGPT and automation doesn't work

Hi all,
A newbie here.
I have an automation where ChatGPT 3.5 turbo reads to blocks of text and summarizes them, but for some reason, it only returns 1 in maybe…100 flows? I’m on tier3 and I don’t think it’s the limitations, unless there’s something I’m not aware of. Per minute, I’d say there are maybe 20-40 email text blocks.