Hi,
I just went to footer.php and cleared out everything that was there. Then save and the Proudly powered by WordPress should be gone.
You can copy and save the content somewhere if you think you might need it again.
If you want the footer to say something else, try looking at footer.php of twenty fifteen theme, copy that content and paste it into twenty seventeen’s footer.php and then just change the wording and url. Not sure if this is acceptable practice.
Regards,
Hi,
I know this is a little late, but regarding the -Remove the text at the bottom left that says “the side bar is not active,” do the following:
Login to your wp-admin;
Goto Appearance then Widgets
On the far right you will see Footer Sidebar. Click on it and then change the text to own it.
That’s it