Printer POS 9210L

I bought a thermal printer and it came with a CD, I installed it and installed the apk normally.
But this apk is only for printing labels and so it is limited.
So I downloaded several apps from PlaysTore, and none of them communicated with the printer, even though I found her bluetooth.
Some of these apps, when installed, ask me what the brand of the printer is, but it is not listed.
I saw that there is an extension here on the forum that has this purpose. a friend owns it and sent me a demo for me to test, potem didn’t work either.
It’s not the printer’s fault because it’s reset and its app works. So and something in communication. Would it be some protocol?
Can someone tell me any extension that can be used in any brand of thermal printer?