What happens to the other 2 bids?

Only one bid (the highest one) per application is considered.

The other 2 bids are considered as back-up bids.

If your highest bid is valid (at or above the cut-off price), it’s taken for allotment.

If your highest bid is invalid (too high or too low or), the registrar may consider your lower valid bids.

If all bids are below the cut-off, the application is rejected.