The Moneydance folks do no have cloud space for users.
All data is stored on your local system, with the exception that if you are syncing between systems then the syncing data is held on a shared system. This may be cloud storage like Dropbox or other systems or it may be a file server, but in no case is it a system owned by Moneydance.
Just to add if you have no Moneydance backups and no data sets but have been syncing to another device then it should be possible to recover your data provided you were using Moneydance 2017/2019/2020 or 2021.
Just post for further help.