Is there another way to interact with that website? Doe they have an API where you can just ask for the data?
Alternatively, check to see if you can get the content/source of the page from the webviewer and see if you can parse that instead of relying on copy/paste.
Is the website using HTML tables (with columns) or CSS in a way that is not "directly" able to be copied? (you can view the source of the website to see)
If you look at the copied "text" in a text editor that can show the hidden values, does it show the tab character (ASCII 9) between values? (you can place tab stops in a text field in FM to "space" the text into columns).
Can you just use a web viewer to display the values (as HTML)?
So many unknowns here.
I'm not sure they have an API, although the thing about the website is, that it requires parsing Username/Password before you can get the desired financial information.
Which also answers your second question.
Sorry for all the unknowns.