Mailchimp campaign traffic not tracking properly

Question:
Mailchimp traffic not being recorded correctly by Wix. Is there something I’m doing wrong?

Product:
Wix Editor

What are you trying to achieve:
My site is connected to my Mailchimp account, and I’ve sent 17 emails in the last 90 days but my Wix traffic source from Mailchimp says only 4 site sessions. This doesn’t tally up with the open and click rates on my emails, so I’m wondering if there’s something I haven’t done to ensure Wix correctly records my Mailchimp traffic/clicks.

What have you already tried:
Wix help articles

Additional information: