Or you can reach out to Avast!, who will likely reach out to DR. >> https://support.avast.com/article/24/. Given you don’t have an order number, you will have to explain what’s happened.
Seeing as how you don’t have an order Number, When using this link:https://support.avast.com/en-us/article/24/
then use #00000000 as an order number. You can then explain your situation.