What kind of ink should I use for the transfer process?

You need to use Pigment Ink for all our processes.

Research on the internet for your printer model.  The word ‘long lasting’ does not mean they are pigment inks.  Many printer under $300 use a black pigment but the colors are dyes.  These will not work.  Generally if a printer uses pigment it will say they are pigment.  If it is not mentioned then they are usually dyes.