Hi there!
I wish to mention you that you are able to edit or remove Flynax Copyrights for free,
here the small instruction of how you may do it.
1. Log in Admin Panel and follow to Languages Manager
2. Click on "Search" button, search form will appeared.
3. Insert "copy_rights" (without quotes) to "Phrase" field
4. Choose "Phrase Key" in "Search in" field and click on "Search" button.
5. Grid with search result will be appeared
6. Click on value to edit the phrase
7. Input new value and press CTRL+Enter or just un-focus the field to save new value.
You may use empty value to hide the phrase in front-end.
Thanks for attention.