Sony A6300 - Dots Appear and Remain on the Screen; You Cannot Shoot Images Continuously; The Image Is Not Clear in the Viewfinder

Set [Red Eye Reduction] to [On].
Shoot the subject at a distance closer than the flash range using the flash.
Light the room and shoot the subject.
[327] Troubleshooting Troubleshooting Shooting still images/movies
Dots appear and remain on the screen.
This is not a malfunction. These dots are not recorded.
[328] Troubleshooting Troubleshooting Shooting still images/movies
You cannot shoot images continuously.
The memory card is full. Delete unnecessary images.
The battery level is low. Insert a charged battery pack.
[329] Troubleshooting Troubleshooting Shooting still images/movies
The image is not clear in the viewfinder.
Adjust the diopter scale properly using the diopter-adjustment dial.
[330] Troubleshooting Troubleshooting Shooting still images/movies
No images appear on the viewfinder.
[FINDER/MONITOR] has been set to [Monitor(Manual)]. Change [FINDER/MONITOR] to
[Auto] or [Viewfinder(Manual)].
Bring your eye close to the viewfinder.