That's good. At least there's some form of email confirmation. Was the email from eBay, PayPal, or the courier? Is there any sign of a tracking number? It could arrive before the 9th, that will just be an estimate. It could arrive before the 9th, or a couple of days after, depending on how busy the courier is and the fact there's a weekend just before it. If it's coming from China, it will be a good bit longer.

When did you order it? If it was in the last few days, you're good to wait.

I'd give it until at least the 11th or 12th of June to arrive, and if not, then come back on here for advice on how to proceed.