Warning "The following component is not considered in this iteration:" makes you aware if one nondesign space is not considered in the optimization/in the iteration
Nondesign spaces tear off because:
either no force or displacement is applied → no stresses are available for the stress optimization
or the force applied is too small
Either it is a design proposal you can accept/even want to reduce the number of connecting point or you prevent the tearing off by:
increasing the force so that the stresses and therefore the relevance of the nondesign space is increased
increase the complexity → more elements are available and a finer model is possible (takes more time).
If the nondesign spaces are very small compared to the hole component it might help to increase the detail of the optimization - Ist das überhauppt noch möglich - Advanced User Settings testen
If you are using the symmetry function and have setup the whole model, the optimizer won't use the symmetrical nondesign spaces and will notify you thereof - don’t worry everything is just as it is supposed to be