Stuck in Object Mode

I’m in 2D Animation, to get a reference image I pick Add>image>Reference. To do this Object mode is necessary. However once I have ny reference image I’m locked in Object mode and can’t access Draw mode. I guess I’ m doing (or have done) something wrong.
Any suggestions anyone?

Make sure you select your grease pencil object in the outliner… It might be called “stroke” or so by default…

Thanks, that fixed it.