Hey Thomas,
Thanks for reaching out and for your interest in our products 🙂 Glad to answer your questions…
Is there a possibility to have a Front-end admin, who can edit and add events? (Can this person also see who registered?)
We have a premium add-on for this: Community Events, basically it adds a front-end for for users to submit and edit events. Please check the product page for more details have how it works.
can we import events? (Csv?)
Yeah, The Events Calendar core version comes with a CSV importer. We also have an paid add-on to import ical feeds: iCal importer.
is there a way to accept other payments? For example cash and bank transfer? Or is this only possible with an add-on?
If you want to sell tickets you’ll need: Event Tickets (tickets with basic RSVP) + Event Tickets Plus add-on (sell tickets). The payment methods are defined in the e-commerce plugin you choos to use for the cart/checkout process (our plugin works with WooCommerce, Easy Digital Downloads, Shopp & WP-Ecommerce). I guess it’s possible to add ‘Cash’ as a payment method.
Hope you find this information useful and please let me know if there’s anything else I can help you with,
Best,
Nico