Hey Jason,
Thanks for posting and providing that additional info. In taking a look at the MailChimp account and connecting it to a local WP setup on my end, I can confirm that I’m seeing the limitation of 100 lists as well. In checking in with our developers, there is in fact currently a limit of 100 lists that will be recognized by this plugin, though it’s something that we can note for consideration in future development of this plugin.
In the mean time, there are a few available options. In your reply, you provided the eepurl to the hosted form. While one option is in fact to link to the hosted form, you also have the option of using the embed code form, which is an actual sign up form that can be integrated onto your pages.
The caveat is (and this is one of the appeals of the plugin) that the embed form code will have to be one with Javascript-disabled (this is so it doesn’t conflict with the WordPress environment. Inside of your MailChimp account, each of your lists has a few embed code forms provided along with it. The Super Slim, Classic Form (w/ JS-disabled), and Naked Form are all options that do not use Javascript to submit the form, so those should work.
To access your embed code forms, you’ll want to login to your MailChimp account, go to the Lists tab, click the arrow selector beside the list in question and click Signup Forms, then click “Embedded Forms”. If you’re having trouble locating these options, the best bet would be to reach out to MailChimp support, and they’d be able to help with those specifics.
As an alternative to the above, you may consider consolidating or deleting lists on the account so that the total number of lists goes below 100. For consolidation, it may make sense to combine your lists into a collection of single lists that utilizes groups. Based on the categories of these lists, this may make sense to do. This article elaborates on how to do that:
How do I turn multiple lists into one list that uses Groups?: https://eepurl.com/v4FX
This is also something that the MailChimp Support team could help in doing!
If you have any additional questions in the mean time, feel free to write us back by posting here and we’d be happy to help!