Coinbase will be accessible for trading today both as an equity and CFD. The orders will be accepted and filled once it begins trading publicly. As it is a direct listing, this is usually 2-3 hours after the opening of the session.
Once the stock is available for trading, it will also be fractional, so you will be able to place value orders if you wish or add it to a Pie.
Can you add the time trading starts to the notification message in the app or if you don’t know state you don’t know?
Just saying orders will be refused until trading starts is a bit vague and lots of people just keep asking over and over when it will be all over social media.