Good evening Jo and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
We are sorry that recurring events are not working as expected when it comes to selling tickets.
I would love to help you with this topic.
You do not need the Events Calendar Pro to use Event Tickets Plus.
However, you will be interested to know that we have indeed started working on recurring Event Support for tickets.
Unfortunately, I cannot commit to a release date at this point. But stay tuned!
Is there anything else I can help you with today ?
Best regards,
Geoff B.