Template forms fail

For three days I have been presenting a problem with the Strata Template, the original template forms are linked to Ninjaform, and to add fields or modify these forms, we installed an extension of this pluggin, everything worked fine for some time, but now they are no longer seen on the web, our solution was uninstall and reinstall them but still the same, they do not load on the web portal. Does anyone know how we can solve the problem? What can you recommend us?

Hi

please make sure you are using theme, plugins and php version of your hosting all are uptodate most latest version.
Otherwise you have to contact the purchased item author to get help.

How to contact an author:

Thanks