Changing default logo hyperlink in free version

We are using the free plan, theme dyad for a blog. We have the title of our blog and our logo in the header section and both hyperlink to the same location (currently set to the blog home page). I want the title of the blog to hyperlink to the blog home page and the logo to hyperlink back to our core website (www.pupjoy.com). I can’t figure out how to do this – is this an issue with using the free plan?

here is our wordpress site – pupjoyblog.wordpress.com

thanks in advance.