Problem After Changing Address

I did not realized your question well.
If you changed domain, in wp_options table, did you changed the url of website?

Yes the domain changed and i fix the domain problems everywhere i could find in the site however the file links are still trying to go to the old domain

If you uploaded your files directly to host, and not throught wordpress, wordpress won’t change your urls that were pointing to old host.
<a href="olddomain.com/myfile.zip">download</a>
and now your downloads are on:
<a href="newdomain.com/myfile.zip">download</a>
I am just guessing, but maybe problem is in this.

This works very well, but read the instructions and warnings and make SURE you have a database backup FIRST!

https://interconnectit.com/products/search-and-replace-for-wordpress-databases/