I'm having the same problem. i have updated my address and location twice, done everything i can think of. Can you please see my profile and tell me what i can do to start submitting proposals? It still says i have to update my address to submit proposals.
I checked your account and was not able to replicate the issue, could you please try clearing your cache and cookies or using another browser? If you`re still receiving the same error let me know what type of browsers you have tried to use, thank you.