This happened probably because you have changed the name of deck but havenโt 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 itโs empty, you can delete this right away, if it has cards then youโll have to move them to your own deck.
Lmk if youโre unable to follow up or if thereโs anything else I can help you with.