We are unable to connect to the marketplace Mercado Libre (Beta).
We contacted Mercado Libre to inform them of this bug today.
If someone is experiencing a similar issue, please let us know.
The error message has been there for a week now.
Thank you so much for being a part of our community and for your post.
This error that you are seeing has been escalated to our senior support team and they are currently working on a solution as we speak.
If anyone else in the Community is experiencing the same, I would recommend subscribing to this post so when this has been fixed you will get the notification of my response.
-Erin: Your Friendly ShipStation Community Manager