The planks are made from synthetic materials and are therefore sensitive to temperature fluctuations. Major differences in temperature may cause the planks to shrink or expand. This creates gaps at the joints.
To prevent this problem, we recommend keeping the temperature in your room between 18 and 30°C. If gaps nevertheless occur between the planks, you can solve this as follows.
First, here is the easy solution: Sometimes just kicking the planks back into position with your foot will do the trick. If that doesn’t work, you can try it using a block of wood that you attach to the plank near the opening with double-sided tape. Carefully tap against it using a hammer until the gap has closed entirely and repeat the process for any new gaps that occur. Problem solved!