This happened probably because you have changed the name of deck but haven’t changed the default deck for sync, here the solution:
Go to ankihub addon > subscribed decks > select Anking overhaul > then click on Set Home Deck > then select your deck which has the most cards.
Now go to browser and select the new deck ankihub creates every time, make sure there are no cards in it, if it’s empty, you can delete this right away, if it has cards then you’ll have to move them to your own deck.
Lmk if you’re unable to follow up or if there’s anything else I can help you with.