schmidtwarz

No. the plugins I’m using are:
woocommerce
woocommerce Germanized
events manager
Jetpack
Revolution Slider
WPBakery Visual composer (included in theme)
Yoast SEO

Strangely the error occurs not all the time, at the moment it is working fine. the whole morning it didn’t.

Problem solved. Under “Bookings” there is an icon, where I can change, what to see.

Sorry, i don’t understand the question, because I’m using the Germanized Version.
In Events – Bookings- General Options the “allowing Guestbookings” is active.

I’m signed in as admin an the form in the fronted looks like: logged-in

If I’m logged out it looks like: logged-out

If anybody – it doesn’t matter if logged in or out – writes a comment in the comment field, it doesn’t appear in any mail or in the system.

Thanks for your suggestion, with category id it is working!!!