This thread is resolved. Here is a description of the problem and solution.
Problem: I am unable to translate the strings in my slider. I am using the Smart Slider 3 plugin. The strings do not appear in String Translation.
Solution: Create multiple versions of your slider, one for each language. Add your translated content to each language version, then use the appropriate translated slider on your translated pages.
Relevant Documentation: https://wpml.org/documentation/getting-started-guide/string-translation/
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.