A buyer purchased an office space in 2012, but the builder failed to commence construction. After winning a case in RERA UP, a Recovery Certificate (RC) was issued in January 2019. However, the District Magistrate's office has failed to execute the RC for two years, citing the builder's lack of funds. The buyer is seeking advice on how to enforce the RC, what happens to their allotted unit if the project is re-assigned to a new builder, and their rights in such a scenario.