Hi there,
Sorry for a late reply, but I believe the support have already given you answers. Still, to make it clear:
1. Try reaching the support@cgtrader.com next time you need help or have any questions.
2. I know the model was restored, so you should be able to see it again. Reaching support is a better way than trying to re-upload a model if you believe it disappeared.
3. The payments are made before the 20th of each month. Payments are made for the sales you made the previous month. For example, all sales you make in September will be paid in October.
Regards,
Eddie, CGTrader