Connecting a webinar app with Keap Max Classic without Zapier

HI everybody! I am using the german software “Webinaris” since a couple of years. Now I would like to connect it to my Keap Max Classic-account. Zapier doesn´t have Webinaris in their portfolio. Can anybody tell me how I could connect them?

Thanks very much!
Christof from Munich


Zapier may actually still be able to help by “catching” details from Webhinaris using a webhook catch…they have an article specific to your question here