Geeetech

Hello, I just got my printer, yesterday I launched the test print, everything went well except that at 3/4 it is taking off, today wanting to launch another print https://100001.onl/ https://1921681254.mx/, the nozzle and the plate heats up well, then the printer activates it and from this moment I do not understand. The printer starts to make just one line (knowing that I want to do Iron Man) it makes one line but always at the same level and at the same right. I don't understand what's going on.
thanks in advance