On mobile your header and the additional donation banner (which I don't see an easy way to remove) take up about 45% of my screen, so it's very hard to see what's on the page in question.
I understand you want donations, but I don't even know what this is yet and it's pretty hard to find out given the very tiny window into your content. I'm not the kind of person to donate to something without knowing what it is, and at this point you're actively dissuading me from finding out. That's a good way to get less donations and less users.
What is this? 1995?