How I can protect my own paid apk from sharing?

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How I can protect my apk which I sell outside of playstor from leaking and publicly sharing ?, like locking it by device id, IMEI or something like this, i want it to work only in one device

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DiLDoST On

Make your app must login to use. Server shouldnt respond to any invalid payments etc. Fully safe.

95+% Safe Method:

Server must not return anything like any sort of data.
Means app is useless without server.
And server is not accessible without login