Parts are peeling off the print bed as they are being printed.
As the printed material cools, it changes shape, shrinking slightly. Keeping the printed part at a higher environment temperature reduces the effect of this shape change as it is being printed.
Fixes are material specific.
Ambient printing temperature should be above 20C (68f). This can be accomplished with an enclosure or a spacer heater. The printer should also be operating away from any ambient breezes (heater, fan, HVAC system, doors to the outside.)