Unfortunately, Square has decided to remove support for third party apps like Enders POS from sending sale data to the square app. This is only true on the Square App version 2.3 and above. If you are using a version previous to this, you will still be able to process payments and use Enders POS on it.
I can and will provide an earlier version APK to those who ask. (Thank goodness for backup)
Now, because of this, Enders POS will be crippled for the time being. The best way to process sales is to multi-task with Square and select Credit Card as the payment process. Lame. I do want you to know I am activity looking for a way to make Credit Card Processing possible with Enders POS that is affordable and easy. By easy I mean as Easy as Square! I am working to get the new Verifone payment processor’s app Sail Payments to work with Enders POS. They are actually a much better company because they support Third Party Developers. Also you can find their contact info on their website, unlike Square…
I thank everybody for their support. And I appreciate your patience while I work to get a functioning Card Processor for you.