To be able to use Adobe (Typekit) fonts inside Master Slider plugin you need to integrate Typekit into Master Slider:

2In order to use Adobe fonts in your slider, you need to create a project with your fonts in Adobe first.

You can learn more about it in this article.

3Copy the ID of project you created in Adobe Fonts.
4Go to Settings > Typekit Fonts and add your Project ID into Typekit Kit ID field.

Save the settings.

5Go to Master Slider and add a Text Layer to your slide.
6Go to the Style tab of the Text Layer properties and click on the SELECT option.

7On the pop-up window click on Custom Style.

Add custom CSS to use your font family, e.g.

font-family: "alexa-std";

8Click on Apply Style button and Save the Changes for the slider.