The printer does not print from my mobile device or does not print correctly.

The printer is not connected to my mobile device correctly.

The tape got jammed or stuck in the printer.

The tape is ejected with the paper liner separated from the tape.

The label does not cut well.

The ink ribbon (black tape) got caught in between the tape layers and came out of the printer, and the tape cannot be used.

How do I set a tape cassette?