No option to "pay" in Evite

Merry Christmas discussion group! I am trying to set up an event using evite, where the attendees must pay $25 to attend. (It is a business event, and we must pay for the conference room usage and lunch, not charging for a house party - lol) I am told you should be able to link to paypal as an option when you edit the evite, but I have not found this functionality! It doesn't work on either my MacBook or my ipad, so I'm pretty sure it is an issue with Safari. I hate to have to go to the library and use a public computer to login and add the option to pay for the evite.

Does anyone know a way around this, or if it is in fact an issue with Safari, or maybe a Mac thing?

Thank you!

Karen