Receiving the yantra is optional and not mandatory. You can remain an Ishanga 7% partner and contribute even without getting initiated into the yantra process. The sanctity and commitment of the Ishanga 7% program remains irrespective of the yantra. However, some may find it easier to connect with an energy form. On the other hand, some may opt out of receiving the yantra due to their lifestyle or other considerations (frequent travelers, unavoidable time constraints, already have other yantras, space constraints, family/business partners may not be ready, etc.).