I am having the same exact problem with Godaddy glad that I found this forum. 500 Internal Server error comes up often when trying to do simple things. I haven’t done any editing to anything that I’ve installed on my wordpress site for it to be going wrong often. I e-mailed godaddy and they pretty much told me that it was my own problem and not theirs.
I’m currently running on a shared windows server and will be taking all of my business away from godaddy if this problem is not resolved soon. If you can show me what is wrong my site is https://www.baltimoresushiblog.com