It's a bug in SAMP and nothing we can do about it. You have to re-try a couple times MAYBE restart your computer and try again if you've tried a wholleee lot of times you may have been route-blocked because you lived near a major ban-evader. Make an unban request explaining your problem and that you think you may have been blocked and the main admins will check your IP to see if you got route-blocked on accident.