Province-Level Clustered Standard Errors in MRP

I conducted a study using Multilevel Regression and Poststratification (MRP). One reviewer raised the following concern:

“Following Abadie et al. (2023), if the authors insist on conducting the analysis at the province level, then the standard errors should be clustered at the same level. I am not sure whether the authors are doing this correctly, and, if not, how this affects the main results.”

How should I respond to this comment?