HTML Wall Keeps Popping Up Everywhere

Greetings! I have spoken with my host (iPage) and discovered that I am having an issue with the WordPress application.

Megharaj K: Hi, my name is Megharaj, how are you today?
Christa: Hello, I’m well – I accidentally got disconnected from my previous person. How are you?
Megharaj K: I apologize for getting disconnected.
Megharaj K: I’m great, thank you. How can I help you today?
Christa: Basically, she was looking into an issue I am having where if I work on my website, periodically I will get a giant page of HTML show up.
Christa: She went into my website and went ahead and posted a test page. I informed her that she would need to do it more than once to get the error, as it doesn’t happen every single time.
Christa: But, we had a miss communication and then I accidentally clicked something wrong and disconnected. It was my fault.
Christa: So, if you could please tell me if this is a problem with the host (you guys) or the website software (wordpress)?
Christa: As a specific example, I went to delete her test post on my blog and html appeared. It’s pages and pages of it.
Megharaj K: Christa, it is an issue with the WordPress application.

Can anyone help me figure this out, or tell me who I should be talking to?