My website was normal at morning, i posted a blog post, send it to my friends and the website downs. I think it was many people accessing, but i saw in the panel the limit is good yet. So I try to use this post https://www.000webhost.com/blog/error-establishing-a-database-connection-wordpress to fix it.
Nothing is working and i don’t have backup of the blog this week 
may you help me?
