EM client pulls in Exchange emails incorrectly by date

Trying out EM client, synced with my UCDenver.edu student email account, it pulls in all of my email, but incorrectly.  It shows emails from 3 months, 1 year, 2 years ago in my 'today" column.  Sorting by received by, and oldest to newest does not rectify this.    Items still from 1+ years ago (and today) are showing up under today.

Hi Benjamin,
could you please send an EML file of one of the emails that are appearing in your ‘today’ column but are in fact older? I want to look at the source data.
Send it to rust@emclient.com with a link to this forum thread in the body of the message. Thank you.

Regards,
Olivia