I created a test account, it worked, I could see my 1000 CORE and the account on the dashboard.
I came back to my account a few hours after. I have my account name on the right corner, when I click on it I have this message : "The account estefantt123 does not exist, are you sure you spelled it correctly?"
Is weird because it worked and I didn't lock the wallet.
On my dashboard, now, where I had my name account, I have a grey rectangle with an question mark inside.