Just to set your expectation, WordPress updates the plugins, and once they do, you also have to update on your end. If you do not have the latest version, you can get it here: Wordpress latest version32.
Once done, please add your API key and secret again by following this guide here:
Getting Started: The WordPress Plugin20
Then you may also check the following as they have steps on how to check in case the form is still now showing up after updating the latest version:
Wordpress: General Troubleshooting32
Troubleshooting: Forms Not Showing in WordPress Plugin32
If you still encounter an issue after following the instructions above, I recommend that you send an email to firstname.lastname@example.org so the team can take a look at your account.