The Capital One credit card was restricted.

Have you tried to reach them?You don't know the specifics of your situation.

There are a number of possibilities.You are over the limit.

You are behind in the payment.

There may be fraud.

You can call if you can't figure it out.

Someone brought you to the attention of the fraud team.It is possible that you used the card in a new place card company.

You may have lent the card to someone else.

If your card has reached its limit, it's automatically suspended until you repay the balance.

In order to ask them, call them.

They are the only people who can answer your question.