The limited eShop that’s available in Latin America and other Caribbean countries will be closing on July 31st, 2020, as per an announcement from Nintendo. The official (Google translated) statement can be seen below.
In certain Latin American and Caribbean countries, the limited version of Nintendo eShop for Wii U and Nintendo 3DS consoles offered some basic functions such as the ability to redeem codes. This limited version of the Nintendo eShop will close from July 31, 2020 and users in the affected regions will not be able to access it to redeem download codes, download programs again or update their programs. So we urge users to take these actions before closing. Also, those programs that require the limited version of Nintendo eShop to operate may stop working. Take into account that Mexico and Brazil will not be affected. Thank you all for using Nintendo eShop and for being great Nintendo fans.
All questions on the matter, can be looked up on the official FAQ for this closure here.
In addition, we would like to add that there are active retrogaming Facebook community groups you can join. For more, visit Retro Gamers Hub (www.retrogamershub.com) for their extensive collection of retrogaming interest groups to choose from.