Optimization of a multilingual WordPress site

Worked on technical support and optimization of the multilingual corporate website Greeneye, focusing on stabilizing WPML, correct output of multilingual content, and improving site performance.
Main tasks

Fixing issues with WPML

Restoring correct logic of multilingual content

Resolving issues with incorrect output of posts between languages

Optimizing multilingual queries and templates

Fixing links between translated posts/pages

Stabilizing multilingual routing

Eliminating conflicts between the theme, WPML, and custom logic

Optimizing the performance of the WordPress site

Working with caching and performance

Frontend/backend debugging

What was fixed
In the project, part of the multilingual content was incorrectly structured and linked between languages, resulting in:

posts being duplicated;

content displaying in the wrong language;

some pages losing translation links;

WP_Query and custom loops not working correctly with WPML;

issues with filtering and outputting multilingual content.

A technical audit of the content structure was conducted, and corrections to the logic of WPML in templates and WordPress queries were implemented.
Technologies

WordPress

WPML

PHP

JavaScript

MySQL

WP_Query

Multilingual architecture optimization

Result
As a result, the site received a stable multilingual structure with correct content display for each language, improved performance, and more predictable operation of WPML without duplication or loss of posts.