Getting Ninjaflex to work

I bought some ninjaflex, and had mild success with my first couple of tries. This has proved impossible to reproduce.

Printing on the blue provided surface of a Flashforge Creator Pro, the first layer begins okay. But the slightest glitch in the first layer becomes a point for the second layer to snag on, creating a lump. The third layer, coming by the same place, snags on that making a worse mess. Usually this results in entire loss of adhesion over some areas of the print – a total loss.

I know you need to print slowly, and I was using the recommended speeds. But this keeps on happening. In the best case, rather than total loss, I get something that looks a lot like "pilling" on a knit sweater.

Help! What can I do to make this work?

Thanks,
Joymaker