Such a big bitcoin you are holding a 10 btc in coinbase i think you can not recover except if you contact them directly since you block your account and you want to reopen it again with bitcoin inside. they can get it back once you contact them just give some proof try to contact them here
https://community.coinbase.com/t/live-chat-support/10903Maybe they can reply you soon in their community site..
Unfortunately, I can't login to community site and post smth while it may be done with Coinbase main account only...