Translation issue

I have a website with a form that was generated with a third party app

Please contact the author of this third party app for support.

Forum volunteers are also not given access to third-party/commercial products, so they would not know why your commercial theme or plugin is not working properly. This is one other reason why volunteers forward you to the commercial product’s vendors. The vendors are responsible for supporting their commercial product.

So, if I write a webpage with html would there be a way to translate from English to Spanish?

This generated form is a static .html file? Its output is not created dynamically on every request? Does the form need to only be in Spanish? Or sometimes English, depending on some other variable? If a static .html page should always be Spanish, then yes, just translate file content as needed. Keep a backup copy of the English version for reference. Only change content that actually appears on screen. Don’t translate anything within HTML tags, though there are a few exceptions which are acceptable to translate, such as “title” and “alt” attribute values.

FYI, WP translations are done dynamically through PHP and the gettext module. All translatable strings are predefined, so you cannot translate arbitrary content through this system.

Thank you for you reply.
What about the plugins that translate the html into ‘wp’ code and then use a language translation plugin?

How multilingual plugins handle translation of post and page content is rather variable, though techniques fall into 3-4 general categories. You should ask through your multilingual plugin’s dedicated support forum about what’s possible.

I’m not clear what you mean by translating HTML into “WP” code. Static strings like UI labels from plugins can be translated by the gettext system. Anything entered by the user would need to be handled by a multilingual plugin. Whether that’s possible depends on the multilingual plugin and how/where the user entered content.