@CrazyCreativo Hashtags were deemed useless by Pinterest in July during a live call. I wouldn't worry about them. We don't use hashtags as an important piece of our strategy. Plain old good keywords and tags are a solid time investment.
Hi @CrazyCreativo and welcome to the PBC!
Like @simplepinmedia mentioned, (thanks for helping!) hashtags will no longer return results of the hashtag, but rather show the search query without the #. In other words, clicking on #puppies on Pin will lead you to the search results page for 'puppies', not the feed of posts tagged with #puppies. So, we encourage creators to not use hashtags and just continue using keywords.
Let me know if you need anything else!