Shamim's Plugins

As we cannot send to both at the same time, so showing both option also is not available.
User can send message to any user, or click ” Message to administrator” which will show administrators name, from where they can send to administrator.

I do not understand your screenshots, can you make it in english?

You can send announcement to any role(s). You can go to front-end (from where you send message) and click “New Announcement”.

Groups are for sending message only. You can create group from role. Please see https://www.shamimsplugins.com/docs/front-end-pm-pro/getting-started-2/group-messaging/

Can you wait 1-2 weeks for this? I have already added the code so that it respect label and placeholder. In next version you will get it.

You are right, message_to elements has some other limitation. There are couple of other feature involved there (eg. multiple recipients, send to admin, send to group), so technically it is not one field but couple of field combined. Thats why it is not working there. But i will try to improve there in next version so that we can change placeholder, label there.

Google keys you are using is not for invisible captcha. Please create new keys from https://www.google.com/recaptcha/admin (select V2 Invisible when create keys) and add domain of this test website then add keys in settings page of this plugin.
Then let me know so that i can test.

I need to see the error to identify it. Can you make a staging site and set v2 captcha there to test?

you can use fep_filter_ajax_form_submit to return false so that it is not added. Then use filter fep_form_submit_button to append the same code as above.