Great question Tomas! Yes, you can do this. When creating your post, click on CaptionAI.
 In the window that appears, type a prompt that describes your post, and make absolutely sure that the toggle for Include Hashtags is on. Note that if all you want in this case is the hashtags, you can copy them and paste them onto your original post, OR you can keep the wording CaptionAI offers along with the generated hashtags

Thanks for your question, if you run into anything else, don't hesitate to leave a comment!