I had the same issue. Couldn’t login access WordPress site. Nothing up. My host was of no help. This article helped me isolate to see which plug-in was the problem. https://premium.wpmudev.org/blog/ten-of-the-most-common-wordpress-problems-and-their-solutions/
And for me Jetpack was in fact the problem. I may try and clean install. But what if that doesn’t work?
An answer to this question would be useful since I too have several key bugs after install with my theme. I am working on it but I may need to go back to a prior version until it gets fixed because it is unacceptable as is. The big ones are drop down menus and category queries for image/portfolio galleries. Right now it is default to old trashed pages for some reason. I am still trying to figure if it is the update, hosting or the theme. One started partially working as I am typing…then the next time not…so we will see.
openyourminddesigns.net
