Well, it sort of worked and might be working again. This is very difficult to troubleshoot. This is the information they provided... " if you tell them that it is making a GET to the list memebers/member ID endpoint but adding a query to include the API key in the call which appears to break it"

Question - Does the Hustle Pro integration with Mailchimp allow you to apply a MC "tag" to the subscriber based on what popup or form is used? I don't think it does, but wanted to triple check with you. If not apply a "tag" can it assign a subscriber to a "group?" So I created a test List (Audience) with one of my other client's paid accounts. It did work properly. So that error we're seeing at MC seems to be the issue... Account nameWebsite Popup (5d83b7e3dab987.49727134) InfoBad RequestSomething went wrong. {"type":"http://developer.mailchimp.com/documentation/mailchimp/guides/error-glossary/","title":"Invalid Resource","status":400,"detail":"Invalid interest ID: '8e33c2bfd0'.","instance":"84be6209-0fdb-410a-94e1-4864762a3ef7"} Member statusMember could not be subscribed. List nameWet Noses Pet Sitting General Newsletter (1bf4aece2e) Special IdentifiersStandard I'm going to ask MC for support on this next.

Unfortunately, the client's account only allows for one Audience (List). I'm not sure if it was ever working properly. It did seem to work on occasion. When testing, I would be able to create an account with a newly-created test email account. Then I would remove that address from the list and test again ... did not work. Then MC said that will not work as they would have to sign up using one of their forms instead of an integrated form. Then it looks like I can't even sign up using the same domain URL. So testing has been close to impossible. You have the log in info for MC. Is there a way you can look at the settings? Steve

Thank you. Looks good.

Thank you for the information. I did some digging under Customize > WooCommerce > Product Images and found they were set to 200x200. So I figured I would start there. I increased the size and then regenerated the images as you suggested under WC > Status > Tools. I think they look a lot better. Thank you for your patience on this. Much appreciated.

Any resolution you've found? Even deactivating Smush Pro did not solve the issue for me.

I just temporarily deactivated WP Rocket and the same issue remains. If you'd like to test and do the same you can do that. Steve