Thank you for
reaching out on the community and telling us about your issue. Ideally when we run an update that also comes with the updates you made in the mobile section. We may need to try resetting it but we can try seeing if we can individually update it first.
Could you try going across the top to accounts > Sync to mobile. Next thing I would try would be to go Quicken > Preferences > Mobile, web and alerts. From here on the left should be a sync button that should say on but we're going to turn it on and off so that also refreshes the connectivity.
The last thing would be to reset the cloud account. I leave this as the last step primarily because it will reset the cloud data with what your desktop has removing any changes you did make in the mobile app. The steps can be found below.
You'll need to sign out of the Mobile App and sign back in:
Try this step out last if we're unable to get the first steps to bring us the transactions over. Let us know how it goes!