If you are still needing assistance with syncing the Budget data in the Quicken Mobile App, please take a moment and review the information available here, and post back to let us know what version and release of Quicken you are using.
Please also let us know if you are using the Mobile App for Android or Apple and what the installed App version is.
Do you have multiple budgets in your desktop Quicken data file? If so, is there a chance that the wrong budget is selected in the Mobile App?
If not, are you missing all of the data for the budget, or only for specific categories/accounts?
The more information you can provide regarding this issue will help the Community to better understand and assist.