Possible reasons for problems... (In General).... Using a Laptop with a "finger Pad", Using one of these
is like Wallpapering your front hallway, through the Letterbox...get a USB Mouse, faster + accurate

With the Pad thing, it's so easy to click on the Wrong thing, or click the pad, when your typing
So find the setting in your laptop, to Turn the Pad Off, and use a cheap USB Mouse instead...Sorted

Also with Computers don't rush it, so many things go wrong when too hasty... When you send the Post in...
Wait, for the message at the top of screen to Disappear, before doing anything else

Rod Watts