Customização

Hello, how are you? I like a lot of time I use Catch but it's been a while since I have a problem in the customization panel, it does not open in the wordpress panel is giving error 505, I sent a message here talking about it, then Someone said it was something hosting server, but only support said the same theme, why have we tested others and works correctly to the one that I currently use that does not open in the wordpress panel. Could someone help me? I really want to keep the theme. And another wanted to request a quote to put in it related posts, I want it to be in it is not plugin. Oh and another one I saw in a demo that can hide author profiles at the end of the article Site;https://atitudeevisao.com.br/