Hi
It should not get stuck.Progess on the website should be updated within a few seconds. Please keep an eye on your chat - if you get a message that your job has been canceled or that your job is invalid, it will not count towards your progress. This happens sometimes when loading saves or connecting to several servers. You should not experience any issues if you take and finish the job in the same session without any interruptions.
If you keep getting errors when taking new jobs, try cancelling all jobs and restart your game (or type game into the console).This ensure a smooth session.