I tried replicating your concern but didn't see any issues when I checked the account. Could you please share more information on the error/notification you are seeing on your end? You can also try using a different browser. Let me know if you're still getting the same error.
I cannot add my education either. This blocking me from completing my Freelancers profile for Upwork. When I attempt to save the education a window pops up telling me there is some type of problem and to try again later - but gives no description as to what the problem is. ( I am using Chrome with Upwork. ) I have repeatedly tried and always get this error. It also appears that what I enter into the form fields is irrelevant as this error window always pops up. I have tried 2 different universities ( I have 2 degrees ) and different descriptions, etc. This appears to be a bug in the Form.
May you please clear your cache and cookies or try using another browser to check if you`re still experiencing the same issue.
Let us know if the issue persists.