you for reaching out on the community and telling us about your issue. I do apologize for the issue you're having. I'm wondering if we may have the issue with the mobile sync as it is an issue we were having previously. I would recommend loading a backup first so we can get back to having the categories back.
https://www.quicken.com/support/how-backup-or-restore-your-quicken-dataNext we'll want to try to turn off the mobile sync. You should be able to do so by going across the top to Quicken > Preferences > Mobile, Web, & Alerts > Sync off.
From here try to download transactions again and see if you have a similar issue happen. Depending what you're able to find out we'll see what we're able to do next.
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