Thanks, the second option worked well! Actually, I found it earlier in this topic: https://ultimaker.com/en/community/19190-xy-start-print-offset-setting-in-cura
And it works! Strange thing, in Cura 2.4 there are different offsets, for example, in Cura 2.6.1 that I'm using now I noticed the print area is higher mostly (top of the bed, Y axis).
Anyway, the correction worked for me, I'm using this GCode, with only the bold line added.
G21 ;metric values
G90 ;absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with the fan off
G28 X0 Y0 ;move X/Y to min endstops
G28 Z0 ;move Z to min endstops
G1 Z15.0 F9000 ;move the platform down 15mm
G92 E0 ;zero the extruded length
G92 X5 Y18 Z15 ;Set this position as the new X/Y zero
G1 F200 E3 ;extrude 4mm of feed stock
G92 E0 ;zero the extruded length again
M117 Just a sec, man... geez...