If you emailed him again today, give him a bit to try and locate where your crown might be so he can let you know when it should arrive.
If you don't hear back from him in a week and still no crown, then start worrying
Just keep in mind if people are having problems contacting Homer, there is probably a reason he is out of contact. Give him a chance to come back and respond. If he comes back with 20 people filing paypal complaints, it will take much longer for him to sort everything out.