Hijacks after submit actions

Unfortunately, the plugin hijacks all onsubmit actions. So it is incompatible with other plugins that want to do things like redirect to another URL, save the data somewhere else (e.g. in database), send data elsewhere (e.g. to a CRM), etc.

Examples include Hubspot https://ww.wp.xz.cn/plugins/leadin/ and Redirection https://ww.wp.xz.cn/plugins/wpcf7-redirect/

A good plugin, marred by this issue.

Would be good for the plugin to pass on control to the next-in-line onsubmit action, after populating the Google Sheet is finished.