Screen goes black after editing – Facebook Review

Hi, I never had these issues but now this happens all the time. When I post something on marketplace or even a local site for sale my location is wrong and also when I try to edit the post my screen goes black. I am unable to do anything except delete the app, go back into the App Store and download again just for the same thing to keep happening. I even also tried to do a new post making sure my right location is listed but changes by itself to another place. This is beyond frustrating at this point. Please advise what could be done to fix this issue. Thanks
Review by AnnMarie Del on Facebook.