Quote - ps: Can someone teach me how to link to a specific post?

It's a lot of messing around, but this seems to work.

Start with this template:

https://market.renderosity.com/mod/forumpro/showthread.php?thread_id=$&page=$#message_$

Open the relevant thread. Replace  the first '$' in the template with the first (id) number from the address bar of your browser.

Find the relevant post, and replace the second '$' in the template with the number of the page you are on.

Click the 'quote' button at the bottom of the post, then copy the last number from your address bar and replace the last '$' in the template with that number.

So for example, the template:
https://market.renderosity.com/mod/forumpro/showthread.php?thread_id=$&page=$#message_$

Becomes:
https://market.renderosity.com/mod/forumpro/showthread.php?thread_id=2856202&page=1#message_3984554

The above is the URL for your post with the question.