All kinds of problems with header logo, images with hyperlinks, etc

Hey there

I am having multiple issues. I had built my site and was pretty happy with it, but then there was an error and the front page disappeared. Since I was unable to get help with this, I ended up loading a different prebuilt template and got my front page back, but now I am having multiple issue with my header. I can sometimes get the logo to be centered, where I want it, and sometimes not. But the worst is that when I am editing it it looks okay, but when I go to look at the page live, the header logo is stuck in a square box and also greatly zoomed in, so you only see a small part of it. Meanwhile, there is all kinds of extra space between the logo and the menu bar that does not seem to exist when in editing mode.

On top of this, in the desktop version, I cannot seem to get hyperlinks on images to work. Even though the links are there in the code, when you click the images, they just link to the images themselves, not the hyperlink. They do work in the mobile version.

Two questions: can you please help me, and 2. If not is there a way to get my money back from this theme? I have never had so many problems with a theme before, and it is driving me nuts.

thecarolinasequestrian.com/TCE/

Also, once I add an element to the site or header, in some cases it is possible to remove it and in others there is not. All I want in my header is something incredibly simple, like I have had for multiple other websites: my logo, centered, with the tagline centered below it, and then the menu bar below that. Why this is hard to accomplish is utterly beyond me.