Hello @TomV
Thank you for reaching out on the community and telling us about your issue. I do apologize for the issue you're having. That is interesting. I'm wondering here if you might be able to fix the download by deactivating and trying to add like it's new. I'll leave steps down below on how to do so.
First thing I'll recommend is to save a backup to revert back to just in case. You can find how to do so down below.
https://www.quicken.com/support/how-backup-or-restore-your-quicken-data
Next we'll try deactivating all of the accounts. You can do so by following the article listed down below.
https://www.quicken.com/support/deactivate-online-banking-services-quicken-account
Once all the accounts are deactivated go ahead and follow the article here on reconnecting the accounts.
https://help.quicken.com/pages/viewpage.action?pageId=3216277
Once you've had a chance to try this see if you're able to get the transactions working properly. Let us know how it goes!
Thanks,
Quicken Francisco