liliiaS

Problem:
After updating a key and removing a banner from the footer, the client's translations stopped working, and directories such as /ru/ and /en/ are showing as 404 pages, despite no changes in language settings.
Solution:
We first suggested checking if the issue persists when all plugins except WPML are temporarily disabled. We also enabled debug information for this ticket and asked the client to provide this by following the instructions at http://wpml.org/faq/provide-debug-information-faster-support/.
Additionally, we noted that the language switcher appears to be custom-made, which might be affecting the links. We recommended temporarily adding the language switcher to the footer via WPML → Languages to test the issue.

If these steps do not resolve the problem or if the solution seems outdated or irrelevant to your case, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the issue persists, please open a new support ticket at WPML support forum for further assistance.