BRIDGE is a part of the app itself and means you can import and export your tracks to different software. To be able to sync to your cloud storage across devices will require MIXO: GOLD

Currently, you can only import Serato Crates into MIXO but we are considering adding the option to export to Serato Crates in the future:

https://support.mixo.dj/guide/why-doesnt-mixo-export-to-serato