Here I need some help, hope that someone can help me.
Here are a few strange case that I can't find out the problem and solution at all.
I using logitech G110 keyboard and Roccat Kone Mouse long time ago. (I think got 4-5 years) so far so good.

Recently I found out some problem, I think some problem / hardware keep sending strange signal in my keyboard which cause some problem.

1) in Axis Game Factory's AGFPRO 2, when start a project, it will keep scroll to left up screen, if I press down key, it will move down then if I release it will move up again until top of the screen edge. After I report to support team, finally they solved it by not capturing some signal in their program.

2) in HEXMMO, after I start the game, when login, after I type the username, when I click to password textbox to key in password, it will auto jump back to username textbox and highlight it. It cause me cannot type the password at all, I had report to support but none of them can solve the problem for me.

3) in cannon brawl, in game, the ship keep flying up only, I press key down to force it fly down also cannot work.

So from there, I suspect something sending strange signal to my PC but I can't find out what is it because for other thing, there is no sign of key "up" pressed as other program or game don't have this problem. Anyone of you can help me on this? Is that any program can use to capture those keyboard input signal and joystick input signal in PC?

Actually base on steam policy, if the account holder pass away, he/she can't pass the account to children right?
I think inside the topic, they talk about this too.

by right yes you cant...
but actually you can...

i already gave my ID and password to my wife...
and said if i die give it to our sons eventho their account already linked to my account under family sharing...

its not like you have to login by fingerprint or face recognition or eye scanner lol...
just ID and password...
they dont know who is login to your account...