Thank 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 here if it might be the mobile sync might be the issue as some users have had similar issues. Lets try seeing if that might be the case. To try go across the top to edit > preferences > mobile & web > Sync off.
Once you've done this try again to see if you're able to get through the one step update. Let us know how it goes!
Thank you for taking the time to visit the Community to post your issue, although I apologize that you haven't received a follow-up response.
At this time I would recommend contacting support directly for advanced troubleshooting steps.
Quicken Care has the tools to review and research this issue further.