IFS Plugin is giving a CURL error on WP Site. Suggestions?

Some of our forms on the website (created using the official IFS plugin) are giving this error:

CURL error: Could not resolve host: .infusionsoft.com

I know the plugin is glitchy but it seems to be getting worse.

HELP!

If by ‘web form’ you mean ‘landing pages’, this could be the issue:

https://knownissues.keap.com/

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The issue is not with landing pages, it is with some (but not all) of our forms created using the IFS WP plugin.