Problem: The client is experiencing a permissions error when trying to access the 'OTGS Installer' option and encounters an error when updating the WPML plugin, which causes the site to stop working.
Solution: 1. We recommend deleting the OTGS Installer since it's no longer necessary if WPML is already installed. Use the Plugins > Add New > Commercial tab to add extra plugins, or manually download them from our site and upload them via Plugins > Add New > Upload.
2. Check for compatibility issues by reviewing a similar ticket and following the steps provided there. Also, ensure that you are using the latest WPML version by comparing your current version with the latest one available.
3. Create a full website backup, update all plugins and the theme to the latest versions, and then disable all plugins except WPML.
4. If updating from the backend is not possible due to an old plugin version, manually update by first creating a full website backup, then deactivating and deleting the old plugin. Download the latest version from here and install and activate it manually.
Please note that the solution provided might be irrelevant if it's outdated or not applicable to your case. If the issue persists, we highly recommend checking related known issues, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If you still need assistance, please open a new support ticket in the WPML support forum.
