Hey Luis,
Sorry you’ve been having trouble here. Getting full-on support here on the PRO forums does, indeed, require the purchase of a license for one of the premium calendar add-ons.
However, one thing you can try in regards to issues here, which I’m happy to recommend, is to test whether or not there are theme or plugin conflicts causing your problems here.
Check out our knowledgebase article here for the steps on how to do that → https://theeventscalendar.com/knowledgebase/testing-for-conflicts/
Let us know what you find!
George