Newsletter field breaks form submission

[jmaas-onoffice]

Discussed in https://github.com/onOffice-Web-Org/oo-wp-plugin/discussions/390

^{Originally posted by **jmaas-onoffice** December 13, 2022} As described in #386, the newsletter field prevents forms from being sent. Since [research is needed](https://github.com/onOffice-Web-Org/oo-wp-plugin/issues/386#issuecomment-1340675421) to understand why this is happening, I propose to spend at most a week trying to fix this issue. If the issue cannot be resolved in a week, please report what you learned and what you think would be necessary to understand and fix the problem.

[dai-eastgate]

@jmaas-onoffice I fixed, you can watch video and give me feedback

https://user-images.githubusercontent.com/106214469/210725044-a1f3a9ae-ca6c-43fb-9732-2b2425a59bf3.mp4

[jmaas-onoffice]

Looks good!

Out of curiosity: What was the cause for the problem? :)

[hungnc89]

@jmaas-onoffice When create address, data send has 'newsletter' field, it's not working, it should be 'newsletter_aktiv'.

[jmaas-onoffice]

Ah, that makes sense. Thanks! :)