Whay The corners from this side on my bed are lifting up? Any ideea?
Is that glue stick? On the bed?
I get this when the build plate is cooling on the sides too quickly with particular brands of PLA. Assumed your using PLA.
Thermoplastics contract as they cool which causes the top layers to pull slightly on the layers below. Some plastics exhibit this much more severely than others; ABS is well known for having this issue while PLA can be printed without having to worry. You can help alleviate this issue by increasing the temperature of your bed to keep the bottom layers at the glass transition temperature (~65 for PLA and ~110 for ABS) and/or building an enclosure for your printer.
What kind of filament? This is just warping. Use more heat at the bed, a brim, or an enclosure.
Check your cooling settings. I found it helps to totally shut the fan off when printing ABS for at least the initial 5-6 layers, or more.
you could use “mickey mouse ears” to keep em down or an increased brims