We are making some backend changes on the Mastery Dashboard in preparation for the v2.0.1 release of the dashboard. It is a significant change which involves rewriting of the backend database for the Aion Dashboard which is going to require substantial time.
In the meanwhile, would recommend using web3 for some functionalities. - https://docs.aion.network/docs/aion-web3; https://github.com/aionnetwork/aion_web3
I will be updating this thread for latest updates.