Hello Yael,
I confirm that warning is displayed by our plugin when it detects widgets translated via WPML String Translation, which is now a deprecated method for having multilingual widgets.
Starting from WPML 3.8, recently released, we recommend to use their native “Display on language” drop-down.
Please also see our FAQ about this, here’s a copy:
If you’re using WPML v3.8 or newer and you need to translate a widget, we recommend to create a separate widget for each language of your site and assign the language to each widget accordingly using the selector “Display on language” provided by WPML. This way you will be able to work with the visual editor also for translations.
For older versions of WPML (up to 3.7.x), we recommend to install the 3rd party WPML Widgets plugin, which provides the same feature described above, that was not available natively on WPML. In the past, we also suggested to translate the widgets using the official WPML String Translation plugin, but this method is now deprecated as it was not very friendly due to the inability of using the visual editor for translations. If you were using WPML String Translation, we recommend to switch to the aforementioned translation method and remove the entries in WPML String Translation list after you moved them to be real widgets. Starting from version 2.6.0 of Black Studio TinyMCE Widget, a warning will be displayed if any deprecated translation is detected.
An example to clarify: suppose you have a widget that has to be displayed in two languages, i.e. English (primary) and Italian.
With the old setup, you would have created the English widget on the Widgets screen, then you would have translated it with WPML String Translation plugin (with no visual editor).
With the new setup, you would create two widgets on the Widgets screen, both using the visual editor, and simply assign the language accordingly, with the “Display on language” drop-down provided by the new version of WPML.
To switch from the old setup to the new setup, you will need to copy and paste the translations (title + text) from WPML String Translation to newly created widgets for the secondary language(s), and also assign the proper language to each widget (both the original one and the new ones).
Old translations will keep working as usual, but we recommend to switch to the new system.
