There was another thread on this same topic a few days ago. This seems to be a known but sporadic problem. You may want to search that thread out, but I'd also contact Customer Support immediately as clearly this is broken and could cause quite a bit of harm if you are possibly also filtered out of client searches (don't know if that is happening).
This is a known issue, and our engineers are looking into it. We'll have one of our agents reach out to you directly via support ticket regarding this concern. Thank you for your patience.
Same issue, very frustrating... dates back several days, so presumably hundreds if not thousands of us cannot submit proposals ?
Perhaps there should be a button on the error page asking "If you believe this is an error" please click here. Then the code could Compare the Location details, print out a BILLBOARD and live feed it to the WORLD... someone in the right place will see it eventually.
I also received a vague message after submitting a propsal (perhaps the same problem) , "my organization does not qualify" or similar, i cannot recreate this.