Sound bar not working

Please follow these instructions Set up your DIRECTV remote | DIRECTV Customer Service & Support. We've contacted you over DM to assist further. Natalia, DIRECTV Community Specialist

Did not work. 

In this case for further assistance, we have sent you DM. Natalia, DIRECTV Community Specialist

That is a Toslink optical output so does your sound bar have a Toslink optical input? 

It has a very small square plug. I don’t know what it is called. 

That is a Toslink optical, did you removed the the outer sleeve that protects the optical len?

I unplugged it from the genie and plugged it into the Gemini. 

Then you need to check the sound bar to make sure it is on the optical input.  There is a small chance the fiber optic cable broke if it was bent to sharply.

It’s on optical 

It's understandable that you're experiencing some issues with your current setup. Perhaps trying out the Sound Bar with Gemini on a different TV could help determine if the error persists. Let's work together to find a solution that works for you. Gustavo, DIRECTV Community Specialist

It’s the same on another tv

If it still works on the other mini then the Gemini needs to be replaced.