I got my front page back, but obvious glitches with home page

Changing one number on my home page shouldn’t throw my site into a tail spin. It changed my front page to showing blog posts instead of showing my landing page! I got it back but it doesn’t look the same. I’ve often had trouble with the icons section right under the flexslider coming out different and not looking good, when I didn’t even touch them. It feels like I don’t have full control of the page and how it looks. I’ve also had issues with lines and symbols showing up in my flexsliders whenever I use the Heading 3 size font. Can anything be done about these glitches?