Can't access admin page

Hello, I’ve recently purchased a domain name – https://www.dailyfantasysportsrankings.com – and while I was doing some backend preparation work, I seem to have changed some setting that has made it impossible to access the back end. I set up the site through Network Solutions, and had been editing it through the startup gobbledygook domain: https://038de32.netsolhost.com/wordpress1/

I had been editing it happily, but then when I went to the “Settings” tab on the WP dashboard, and edited it to use my actual domain name (www.dailyfantasysportsrankings.com), and clicked save, the whole thing went up in smoke. Now, I can visit the site, but the theme I chose is nowhere to be seen, and it appears to be basic HTML and no theme at all. When I go to the log in page, https://038de32.netsolhost.com/wordpress1/wp-login.php, I can enter my login info, but the “log in” button still points to https://www.dailyfantasysportsrankings.com, which makes it impossible to log in. It’s quite a pickle, and I’m not sure how to wiggle out of it. Thanks in advance for any help!