Removing items & adding translations

This plugin looks like exactly what I need, but I have run into a couple of snags, which I hope you can help resolve.
(This image displays all my questions safe the last one)

1. How can I remove the Google & Outlook Calendar options & the “Show in my Timezone” button?
   I already tried multiple times to unclick these features in the event options of the event itself and in the RSVPMaker Settings menu, but each time I click “save” the options get reset to the settings as before
2. How can I remove or translate “RSVP Now!”?
   Preferably, I would like to remove this text, but if this is not possible, I would at least want it to be displayed in my language
3. How can these English words be translated to my language
   In the linked image above, the numbers (3) – (4) – (5) – (6) each show sentences that do not get translated to the language of my site. How can I get these to display in my language?
4. How can I remove the Captcha security message requirement or make it display correctly?
   This is a similar issue as the first issue where unclicking the option in the settings appears not to be allowed, since it resets each time I save. I managed to get Google ReCaptcha (v2) to display properly, but the Captcha image above remains a requirement, but is never displayed.
5. Guests not registered to wordpress?
   See this image
   And lastly, when looking at the page as a non-logged in user to my site, this blue button to RSVP gets displayed. When clicking that, I get redirected to the wordpress login page, as if each guest that wants to RSVP should be a WordPress user of my site. This doesn’t seem right, does it? How can I make it so that anyone can RSVP?

Thank you very much in advance for your help.

Charlotte

The page I need help with: [log in to see the link]