Exported files failed

I’ve tried exporting the files so many times, but it keeps failing. Sometimes it works, but then the next photo won’t export. Then, like 20 minutes later, it might randomly work again. Most of the time, it just doesn’t export, and honestly, it feels like it’s all down to luck. I exported as JPEG file. The problem is when i click the save export button, the tab doesn’t show up or pop up. I tried on both iphone 12 pro max and ipad latest generation. But keep failing. Total of 163 photos. Btw I managed to export all but it takes 5 hours (average 2 mins per photo) by the way, i upgraded to the capture one all-in-one subscription. After upgrading, I thought the results would be different, but they’re still the same.