Good evening Carlotta and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
We are sorry to hear that your custom title does not display correctly.
I would love to help you with this topic.
As a first troubleshooting step, could you please provide us with your complete system information in a private reply using the instructions found in the following link?
https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Secondly, could you please provide me with a screenshot of your advanced mini-calendar settings ?
Best regards,
Geoff B.