Can't sync with computer - phone syncs, but the computer does not receive anything

Can’t sync with computer - the phone syncs, but the computer does not receive anything. The phone tells me, that it syncs, but the computer does not receive new photos for example. I’m premium user (20 GB). The newest data on the computer are 2 months old. Login works without problems. The computer shows the state fom 2 months ago, that is “1,5 GB of 20 GB (7,66%) used”.
What should I do?

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Hi!
I’m not specific solution but.
How to sync your app?
Did you use the E cloud? An app? And wath is your need?
If it’s just for transfer some app, maybe is good to use USB cable or an app like KDE connect for easy transfer by Wi-Fi