Hey Kari,
Thank you for reaching out to us! I’m so sorry to hear that you are having problems to import your events! Let me help you to solve this!
I initially got the same error as you did and in my case the cause of the issue was the Import Date Range Limit.
Could you please access your Dashboard, head over to Events > Settings > Imports > Global Import Settings, increase the Import Date Range Limit from One month to Three months and try to import your events again after that?
I hope this helps! If you have any other questions in the mean time, please feel free to let me know and I’d be happy to help as best I can!
Cheers,
Patricia