I installed the Pageline Customize Plugin in order to change the number of posts in the masonic grid. I tried adding a code to the fnctions.php file of the plugin, at the bottom. It didn't work, so I erased it but with it also a part of the PHP code. The site went blank, every page, even the login. Can't go back, I was told I should try access the place where the issue happened through the database but I don't think I have the necessary skills to resolve this.
I am not very familiar with PHP either and obviously shouldn't have touched there in the first place. Lesson learned.
What would you advice me to do in order to get my site back? Can you help?