I checked your account and I can see that you are yet to submit your profile for review. You need to click the review application button to make sure you did not miss any section of the profile creation process. Any portion that is highlighted in red needs to be filled-in. Please review your application and update the missing fields to be able to submit your profile for review. In this case, please update the city field and resubmit your profile for review.
Once you submit your profile, it takes at least 24 to 48-hours for the process to complete and you will be notified via email about your account.
I tried it on my end and didn't go through any issues. When you type-in your city, please select the city from the drop-down list that will pop below the text field. You can also try clearing your cache, and cookies first, or using a different browser, to see if the issue persists.
Your profile was accepted, feel free to start submitting proposals for jobs that you find to suit your skills and experience. Also, please check out these threads Getting Started on Upwork and Hiring Headquarters. There you’ll find some excellent articles and learn more about Upwork.