use the sticker - if they sent yopu one then they don't expect you to just print on the bed.

the other way is to adjust your z-axis gap in the slicer software. start with 0.1mm and go up in 0.05 increments untill you get to the sweetspot where things stick while printing and release when cold :-)



Huh weird, it's replicator clone. but with one extruder and an unheated bed. That is an odd duck :-)
And the bed is Glass - not plastic :-)