Hi @capucinegaudry
So this sort of depends on:
1. Are these forms inserted into Page Builder? If so:
In the past we’ve seen an issue with Gravity Forms with conditional logic not display within Page Builder when inserted with Gravity Forms widget. The last time I looked at this it only applied to forms with conditional logic. The workaround is to insert the form using the shortcode via the SiteOrigin Editor widget or Black Studio widget instead of the Gravity widget. That’s the only conflict that’s open that we’re aware of. So perhaps test that out.
2. If these forms aren’t inserted into Page Builder and inserted into regular widget areas or via the regular WP editor and they just disappear when Page Builder is activated then something else is up and you’ll need to troubleshoot.
That process is essentially stripping everything away until the problem resolves and then adding back until it breaks again. With all plugins deactivated at once except PB and GF, does the issue resolve? Go from there.