Hiya @sgfanega ! Have you checked out our form debugging article?
https://answers.netlify.com/t/support-guide-form-problems-form-debugging-404-when-submitting
It describes how to get your forms detected, and how to troubleshoot when they are not.
I can tell you there is no limitation on the number of forms in a single html page, once you get the syntax right, so that troubleshooting guide should help you (TL;DR start from the html - not whatever code or packages create the html - and look specifically at the form definitions that get deployed on Netlify. I think you’ll find that there aren’t two definitions in an HTML file with data-netlify=true or netlify parameters.