i use v2 because it has a better useability and v3 does not work in my browser
Old Chess.com version!

Not everyone is rich enough to upgrade to a new version of Microsoft OS or afford a new computer. Planned obsolescence gets shoved down our throats by these monopolies and coders have to change for their websites and products to work. What a racket! Meanwhile the rest of us, in the minds of the greedy CEOs of the monopolies, can go to hell.
Why do the theme settings (boards/pieces) not work in v3 for puzzle section? That ugly green board does not change no matter what style board/pieces are chosen!

Why do the theme settings (boards/pieces) not work in v3 for puzzle section? That ugly green board does not change no matter what style board/pieces are chosen!
The person creating the puzzle decides on the theme. Not sure why it is done that way.
Tactics Trainer should use your theme.

V3 must be perfect for staff to do this.
Or there are jobs in the company that don't directly involve the same coding staff that are directly working on v3 issues.

Stop all scirpts
example chess.com scirpts,google annalytics and others
There is an idea. Stop all scripts and none of the site will work

The person creating the puzzle decides on the theme. Not sure why it is done that way.
FWIW, i reckon it would be better if the board and pieces were displayed according to the viewers' settings rather than that of the poster... just saying...

The new chess software is terrible, hard to navigate. I tried it for one month and still get lost and frustrated ! Cartoon icons that do not really indicate what you are looking for. I am planning to leave when my current membership expires.
Yes, any new members get into V3 and the vast majority of those never try V2. You can see a list of new members on: https://www.chess.com/members