Stake didn't understand anything, Stake is just rude.

It was allowed to make a Deposit of 5000 euros
It is allowed to play a ticket with that much money

If by any chance the ticket was lost, no verification would be required, you could still gamble, but in this case the ticket was won and now we will harass you so that you can't take your money. A classic story that I see hundreds of users are also complaining about.