The problem (also called warping) may be due to the Z-axis being calibrated too far from the circuit board.
1) Therefore, try a manual calibration of the printer by going to "printer tools" in the Sculpto app. See this video on how to properly calibrate the printer.
2) If you have a buildtak printed circuit board, we recommend cleaning it with glass cleaner when you experience that the adhesion is reduced.
3) If your printer is in a place where the temperature is lower than room temperature (22 C) or where there is a risk of drafts, this may affect the filament and cause it to drop on the circuit board. In this case, be sure to place your printer in a place where the temperature is warmer and there is no risk of drafts.
4) Check if there is dirt or filament residue on the circuit board's 3 magnets or down in the 3 holes that could cause the circuit board to not lie stably on the printer when printing. If the circuit board is not positioned optimally, this may also cause warping.