This thread is resolved. Here is a description of the problem and solution.
Problem: WordPress backend language is not the language selected in the user profile.
Solution: 1. go to WPML > Theme and plugins localization 2. select the option "Translate themes and plugins using WPML's String Translation and always load .mo files as backup" in localization option : https://take.ms/VLhND 3. save 4. switch back to "Translate themes and plugins using WPML's String Translation only (don't load .mo files)"
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.