Two Questions Please On Photoshop Elements 2023 and Photoshop CS5

Hello all

I have 2 questions please

First is that in Photoshop CS 5,  I have NO problem copying half top of a screenshot and pasting it on SELECTED area of the bottom of screenshot, flipping it, and use opacity to fade it out and then using combo of ripple and ocean ripple to create realistic reflection .

I have been told many times by experts that Photoshop Elements 2023 can do precisely same job as more powerful Photoshop CS 5.0  so I did the same thing in the Elements 2023.  It works well EXCEPT opacity does NOT work.  When I use it, it creates black and white checkerboard instead of fading out.  It can work with opacity if I paste normally on bottom of the screenshot and flip it and use opacity to fade out BUT BUT opacity NEVER NEVER works if I paste onto selection as seen on my screenshot.  Please advise??

Second question is that because Adobe refuses to allow me to install Photoshop CS 5.0 into my new laptop so that I can retire 10 year old laptop even though I gave the valid serial key code. So my question is will it work if I buy and use Laplink to transfer Photoshop CS 5.0 from old laptop to new laptop I paid lots of money to buy this software and I am NOT giving it up as well as I am not paying annual subscription for new Photoshop because Photoshop CS 5 does good job for me.

Thank you for any assistance any of you can provide for me

Sincerely,

Aharon