Hello - I am Taimum new to Upwork and just went to submit a proposal for the first time. I finished my cover letter, hit submit and got an error message saying "Sorry, we were unable to save your application. Please update your address." I've searched around a bit, but can't seem to come up with why this is happening. I'd appreciate any insight!
You will need to add your city as well in order to be able to submit proposals.
To do this go to Settings > Contact Info > Location and list your city. If you have any additional questions let me know, thank you.