Mailchimp Lists stopped appearing in Plan

I had on Subscription Plan that added registrants to a MailChimp list. However, I tried to duplicate the subscription plan, in an attempt to created a similar plan. But after doing this, I noticed that the MailChimp registration stopped happening, as well, the "lists" do not appear in the Mailchimp section of the Subscription Plan. ie. the section where you decide which list to add the registrant to.

Anyone else have this issue. Resolution?

PHP 5.6.29
Joomla version, 3.6.5
Membership Pro version 2.7.1

As replied via support ticket, seems this is related to server setting which block request to Mailchimp API. Please update me with the result once you contacted your hosting provider so that we can work on it further

Regards,

Tuan

Hi Taun,
You and my server-host have been great. My server-host staff figure it is probably that my server-IP address was being blocked by MailChimp Akamai firewall software.
Since I have a free MailChimp account, there is no way to contact them to get the block removed.

Despite the problem not being resolved, I very much appreciate your help with this problem. Thank you!

Update.
It seems MailChimp had blocked my server's IP address for about 2 days. We were testing MailChimp so we only had a free account (so we were unable to contact MailChimp about the problem) so MailChimp does not give assistance to anyone on free accounts.
It seems someone else may have contact them and today our site is able to connect with the MailChimp lists again.
So it actually had nothing to do with the Membership Pro software nor with our web-server.

Lesson learned, we will be looking into trying a Joomla extension mailer directly. We didn't get too many registrants for our services, but those that we did I was able to manually add them to a MailChimp list. But again, we had no idea if and when this would be resolved by MailChimp.

Thank you Tuan for your prompt help with this matter. Much appreciated, Bruce Angus

Thanks Bruce for the update. I'm glad it worked well now

Regards,

Tuan