nickM-18

Problem:
The client is experiencing an error message 'Unable to parse data from service response' when attempting to register a license for a multisite using the OTGS Installer.

Solution:
1. We recommend following the solution mentioned in this guide which provides details on automatic WPML registration using PHP.
2. Update WordPress and WPML plugins to the latest versions. Before doing so, ensure to take a full backup of your website and database. It is advisable to perform these updates on a staging or development site first to avoid compromising your live website.

If the problem persists after trying these steps, or if the solution seems outdated or not applicable to your case, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent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 further assistance is needed, please open a new support ticket at WPML support forum.