Background of the issue:
I just bought the WPML Plugin and tried to install it. During the installation, the sitexpress multilingual plugin did not work.
Symptoms:
The sitexpress multilingual plugin did not work after attempting to install WPML.
Questions:
Why did the sitexpress multilingual plugin not work after installing WPML?
How can I resolve the issue with the sitexpress multilingual plugin?
Also, if you go here (https://wpml.org/account/downloads/) and select "I want to download WPML manually", you will have access to all the other add-ons that come with your subscription.
I hope that you will find this information helpful.