I appreciate the patience while I was looking into this.
The archive title "Our professionals" isn't being translated because in the plugin "TeamPress", the string was hardcoded and not properly internationalized. This should have been done by the plugin's developer as explained here: https://developer.wordpress.org/themes/functionality/internationalization/.
You can fix this in the plugin's files but please note that when the plugin is updated, you'll need to redo the fix unless you contact the plugin's developer and ask them to fix it permanently.
Please go to: wp-content/plugins/team-press/templates/archive-team.php
Then, scan that plugin in WPML → Theme and plugins localization, and you'll find the strings under WPML → String Translation, as shown in the attached screenshots.