Refresh Issue Here

I usually farm the last mission.Most of the times,it freezes halfway through and makes me refresh,not to say it takes a couple refreshing attempts before my client actually starts working so I can log in,start the mission again and guess what…Get the same result afterwards.
Sorry I couldn’t provide any screenshots,but it doesn’t even save my mission progress or give me the rewards when I actually manage to complete the mission.
It’s getting really annoying.Happened over 20 times today while I never had this kind of issue before…
Please fix this.If anyone’s having the same problem,please leave a comment down below.