I get this message after a new 2.5.2 pl installation in mailchimp
modmailchimp/elements/snippets/snippet.modMailchimp.php : 327) PHP warning: Illegal string offset 'tag'
Great for some feedback.
MailChimp just changed their API (again). So that could be your issue.
Looking at the modMailChimp code at Github, I found this message:
modMailchimp is no longer being maintained or supported.
The last update was 5 years ago, so it's quite possible that it just doesn't work with the latest MODX versions.
Thank you BobRay. I have found another way without the plugin.
Best regards Rickard
What did you end up doing?
BTW, I should have mentioned the Notify extra. It sends any kind of email update to users based on their user groups and/or tags.